Question: When did Booth look for help with his plot?
About the article "Assassination of Abraham Lincoln", section "Mudd's culpability".

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The degree of Mudd's culpability has remained a controversy ever since.
Some, including Mudd's grandson Richard Mudd, claimed that Mudd was innocent of any wrongdoing and that he had been imprisoned merely for treating a man who came to his house late at night with a fractured leg.
Over a century after the assassination, Presidents Jimmy Carter and Ronald Reagan both wrote letters to Richard Mudd agreeing that his grandfather committed no crime.
However, others, including authors Edward Steers, Jr. and James Swanson, assert that Samuel Mudd visited Booth three times in the months before the failed kidnapping attempt.
The first time was November 1864 when Booth, looking for help in his kidnapping plot, was directed to Mudd by agents of the Confederate Secret Service.
In December, Booth met with Mudd again and stayed the night at his farm.
Later that December, Mudd went to Washington and introduced Booth to a Confederate agent he knew — John Surratt.
Additionally, George Atzerodt testified that Booth sent supplies to Mudd's house in preparation for the kidnap plan.
Mudd lied to the authorities who came to his house after the assassination, claiming that he did not recognize the man who showed up on his doorstep in need of treatment and giving false information about where Booth and Herold went.
He also hid the monogrammed boot that he had cut off Booth's injured leg behind a panel in his attic, but the thorough search of Mudd's house soon revealed this further evidence against him.
One hypothesis is that Dr. Mudd was active in the kidnapping plot, likely as the person the conspirators would turn to for medical treatment in case Lincoln were injured, and that Booth thus remembered the doctor and went to his house to get help in the early hours of April 15.
Many historians agree that President Abraham Lincoln's future assassin, John Wilkes Booth, visited Bryantown, Maryland, in November and December 1864, claiming to look for real estate investments.
Bryantown is about from Washington, D.C., and about from Mudd’s farm.
The real estate story was merely a cover; Booth’s true purpose was to plan an escape route as part of a plan to kidnap Lincoln.
Booth believed the federal government would ransom Lincoln by releasing a large number of Confederate prisoners of war.
Historians agree that Booth met Mudd at St. Mary's Catholic Church in Bryantown during one of those visits, probably the November visit.
Booth visited Mudd at his farm the next day, and stayed there overnight.
The following day, Booth purchased a horse from Mudd's neighbor and returned to Washington.
Some historians believe that Booth used his visit to Bryantown to recruit Mudd to his kidnapping plot, although others believe that Mudd would have had no interest in such a scheme.
A short time later, on December 23, 1864, Mudd went to Washington where he met Booth again.
Some historians believe the meeting had been arranged, but others disagree.
The two men, as well as John Surratt, Jr. and Louis J. Weichmann, had a conversation and drinks together, first at Booth’s hotel, and later at Mudd’s.
According to a statement made by associated conspirator George Atzerodt, found long after his death and taken down while he was in federal custody on May 1, 1865, Mudd knew in advance about Booth's plans; Atzerodt was sure the doctor knew, he said, because Booth had "sent (as he told me) liquors & provisions [...] about two weeks before the murder to Dr. Mudd's".
After Booth shot President Lincoln on April 14, 1865, he broke his left leg while fleeing Ford's Theater.
Booth met up with David Herold and together they made for Virginia via Southern Maryland.
They stopped at Mudd's house around four o'clock in the morning on April 15.
Mudd set, splinted and bandaged Booth's broken leg, and arranged for a carpenter, John Best, to make a pair of crutches for Booth.
"I had no proper paste-board for making splints...
so..I...
took a piece of bandbox and split it in half, doubled it at right angles, and took some paste and pasted it into a splint".
Booth and Herold spent between twelve and fifteen hours at Mudd's house.
They slept in the front bedroom on the second floor.
It is unclear whether Mudd had been informed that Booth had murdered President Lincoln at that point.
Mudd went to Bryantown during the day on April 15 to run errands; if he did not already know the news of the assassination from Booth, he certainly learned of it on this trip.
He returned home that evening, and accounts differ as to whether Booth and Herold had already left, whether Mudd met them as they were leaving, or whether they left at Mudd's urging and with his assistance.
Whichever is true, Mudd did not immediately contact the authorities.
When questioned, he stated that he had not wanted to leave his family alone in the house lest the assassins return and find him absent and his family unprotected.
He waited until Mass the following day, Easter Sunday, when he asked his second cousin, Dr. George Mudd — a resident of Bryantown — to notify the 13th New York Cavalry in Bryantown under the command of Lieutenant David Dana.
This delay in contacting the authorities drew suspicion and was a significant factor in tying Mudd to the conspiracy.
During his initial investigative interview on April 18, Mudd stated that he had never seen either of the parties before.
In his sworn statement of April 22, he told about Booth's visit to Bryantown in November 1864, but then said "I have never seen Booth since that time to my knowledge until last Saturday morning."
He deliberately hid the fact of his meeting with Booth in Washington in December 1864.
In prison, Mudd belatedly admitted the Washington meeting, saying he ran into Booth by chance during a Christmas shopping trip.
Mudd’s failure to mention the meeting in his interview with detectives was a big mistake.
When Louis J. Weichmann later told the authorities of this meeting, they realized Mudd had misled them, and immediately began to treat him as a suspect rather than a witness.
During the conspiracy trial, Lieutenant Alexander Lovett testified that "On Friday, the 21st of April, I went to Mudd's again, for the purpose of arresting him.
When he found we were going to search the house, he said something to his wife, and she went up stairs and brought down a boot.
Mudd said he had cut it off the man's leg.
I turned down the top of the boot, and saw the name 'J.
Wilkes' written in it."
Although Booth is initially disrespectful of Sweets due to his youth, the two eventually develop a friendship, albeit one that is, for a time, pressed by Sweets' interest in Booth's past as an abused child and Booth's dismissive treatment of Sweets.
Booth does, however, recognize Sweets' skill as a profiler and often takes Sweets along to conduct interrogations and analyze a victim or suspect's personal effects for some insight.
Throughout the fourth season, the two develop a father/son relationship, something that is especially obvious when Sweets turns to Booth for advice about his girlfriend in "The Cinderella in the Cardboard".
This is again apparent when Sweets doubts Booth's trust in him when Booth consults Dr. Wyatt over himself when he discovers that, following his operation, he is no longer the expert marksman he once was.
However, Wyatt points out that Booth taking Sweets into interrogations was evidence of Booth's implicit trust in him, while Booth merely avoided discussing his potentially work-related issue with Sweets because Sweets' first loyalty would be to the FBI and he did not want to create a conflict of interest for him because he was too fond of him.
In "The Critic in the Cabernet" when Booth is in the hospital, Sweets is visibly upset and emotional about Booth's predicament.
Booth also seems to have a grudging respect for Sweets's skill as a psychologist.
Although Booth is unenthusiastic about their regular appointments, he occasionally seeks Sweets's advice and even asked him for help with Parker.
On other occasions, Booth has asked for Sweets's help during investigations, even explicitly recommending him to Cam on one occasion.
In the beginning of the fifth season, Sweets observes that Booth is in love with Brennan, but Sweets intervenes, believing that his attraction is a by-product of the alternate world he experienced during his coma.
He warns Booth that the attraction may not be real and that he should not act on his feelings as he may later fall out of love and hurt Brennan.
Although Booth initially disregards him, he later seems to realize the validity of his advice and ultimately decides not to tell Brennan that he is in love with her. 
Surratt served as a Confederate Secret Service courier and spy and had been carrying dispatches about Union troop movements across the Potomac River for some time.
Dr. Samuel Mudd introduced Surratt to John Wilkes Booth on December 23, 1864, and Surratt agreed to help Booth kidnap Abraham Lincoln.
The meeting took place at the National Hotel, where Booth lived in Washington, D.C. Booth's plan was to seize Lincoln, take him to Richmond, Virginia, and exchange him for thousands of Confederate prisoners of war.
On March 17, 1865, Surratt and Booth, along with their comrades, waited in ambush for Lincoln's carriage to leave the Campbell General Hospital and return to Washington.
However, Lincoln had changed his mind and remained in Washington.
Following Lincoln's assassination on April 14, 1865, Surratt denied any involvement with the murder plot, claiming at that time he was in Elmira, New York.
Surratt did not take part in the assassination, but he was one of the first people suspected of the attack on Secretary of State William H. Seward.
However, it was soon discovered that Lewis Powell had tried to kill Seward. 
The Booths of Dunham Massey were the force behind “the Booth Rebellion” during the Commonwealth.
They were also a force in the Restoration.
"Old George" Booth and grandson, "young George' Booth were leads in defending the Stuart monarchy.
Old George Booth (1572-1652) married three times and died at the age of 80, in 1652.
Outliving his son, who died in 1632, he was succeeded by his grandson, Young George.
Old George Booth also married heiresses, thereby securing a firm financial base for the family.
Marriage to Elizabeth Carrington also brought land southwest of Manchester into the Booth ambit, linking Dunham to Boothstown.
Old George built the Elizabethan house at Dunham Massey, making it the family seat.
In 1618, Old George received a baronetcy from James the First.
The Booths were low church Anglicans, suspect of Charles the First’s and Archbishop Laud’s high church reforms.
They supported Parliament (1642), but became disaffected with the Cromwellian Protectorate.
Young George was excluded from Parliament in Pride’s Purge (1648) due to his preferred negotiations with the king.
Both George’s retired to Dunham to tend their lands.
Old George died in 1652, l have secured the family’s future with marriages, land, and a hereditary title.
After Oliver Cromwell’s death and Richard Cromwell’s resignation, Young George moved into rebellion.
He publicly backed the idea of Parliamentary supremacy knowing that once called, Parliament would restore the Monarchy.
He made common cause with royalists such as Peter Leicester of Tabley.
Booth’s co-conspirator at Chirk Castle erred in calling directly for Restoration.
Booth’s Rebellion was put down.
Following Wade’s march on London the next year, a decision was made to invite Charles Stuart to return.
Young George Booth in the delegation to the Hague to approach the pretender.
Because he was not in league with the regicides, George Booth was rewarded with the title “Lord Delamere.” Booth disliked the frivolity of the Restoration court.
The first recorded use "Lord (Baron) Delamere" was in 1661, when Charles the Second (1660–1685) elevated George Booth (1622–1684) for loyalty to the Crown.
Old George resided in northern Chester, England at Dunham Massey Hall.
His heir was Henry Booth.
Henry Booth, 2nd Lord Delamere and Earl of Warrington (1652–1694), was a proponent of the Protestant cause during the Glorious Revolution, for which he was three times committed to the Tower of London based on evidence, in part, from Nathaniel Wade.
Henry Booth was a ‘whig Jacobite,’ later noted for his centrist approach focused on the liberties of Parliament.
Being low church, both Young George and his heir favored Monmouth over James the Second.
They were suspected of complicity in the Rye House Plot.
Old George Booth died in 1684.
The 2nd Lord Delamere was then accused of treason following the Monmouth Rebellion.
He was imprisoned in the Tower of London.
The family pawned the Booth silver to fund his legal defense.
The case did not come to trial.
No evidence was found against him.
The 2nd Lord Delamere returned to Cheshire.
In 1688, William of Orange landed.
The 2nd Lord formed a regiment and rallied the Cheshire gentry to support William and Mary.
They marched, joined William and, in gratitude, the pretender made the 2nd Lord Delamere “Earl of Warrington.” Lord Delamere was also one of three Peers taking audience with James the Second, asking him to abdicate the throne.
He then returned to Cheshire, became Lord Lieutenant and organised the army for its expedition to Ireland.
James was defeated in 1690 at the Battle of the Boyne.
However, by this stage, the Booth family were in financial difficulty.
In 1694, the first Earl Warrington died with £50,000 of mortgages.
The 2nd Earl needed to marry well.
John Oldbury made a fortune in the East India Trade.
Oldbury had no son, but did have two daughters.
He was eager to marry them into the aristocracy.
They Oldbury girls reputed to be worth £40,000 apiece.
Warrington married Mary Oldbury, but the two were not temperamentally suited.
Mary was neither well educated nor refined.
Warrington was reserved and shy.
They lived at opposite ends of the manor, but were together long to enough to have one child, Mary Booth.
To prevent alienation, he created an estate so that her mother’s wealth would be inherited by Mary’s children.
Mary Booth married the Earl of Stamford, Henry Grey.
Mary administered her own financial affairs.
The 2nd Lord Delamere had a son named George (1688–1758) who became Earl of Warrington and 3rd Lord Delamere.
The Earldom went extinct (1758) upon the death of 3rd Lord Delamere.
He had no male heir.
Earldoms only pass to direct male descendents.
The 3rd Lord Delamere’s brother Nathaniel did take up the title as the 4th Lord Delamere.
But this title also became extinct on Nathaniel’s death in 1770.
Nathaniel’s son, also named Henry (1710–1784), refused to take up the title Lord Delamere for personal reasons.
This Henry Booth was entitled “Lord Delamere,” but he had no legitimate children.
He refused to claim the Title, and the barony of Delamere terminated, reverting to the Crown.
Bartholomew Booth was thought to be the son of this Henry’s illegitimate brother.
Reverend Booth was nephew to Lord Henry Booth, Earl Delamere.
Booth’s cousin and the Earl’s daughter, Lady Mary Booth, succeeded to the Delamere estate and married Earl Stamford.