Question: What County does Route 97 continue to after going through Essex County?

Context paragraphs:
Ruth Stevenson: Ruth E. Stevenson (1923-2014) was an American Republican Party politician who served as the New Jersey Republican State Committeewoman from Essex County and as Vice Chairwoman of the Essex County Republican Committee.  She was the President of the New Jersey Federation of Republican Women, and a Delegate to the Republican National Convention is 1960, 1964 and 1972.  She served as Essex GOP Vice Chair under Robert W. Kean, Andrew C. Axtell and Frederic Remington.  She was appointed Clerk of the Essex County Board of Freeholders in 1969, and served for nine years as a Commissioner of the Essex County Board of Elections, appointed by the Governor.  Stevenson served as a Legislative Aide to two Essex County members of the New Jersey General Assembly, Beatrice Stiles from 1960 to 1961, and Frederic Remington from 1978 to 1982.  In 1961, Stevenson became a candidate for the State Assembly, but was unsuccessful.  She finished 18th in a field of 31 candidates for 9 Essex County Assembly seats; with 121,590 votes, she ran about 6,000 votes behind the winner of the 9th seat, running mate C. Robert Sarcone, and about 20,000 votes behind the top votegetter.  When Katherine Neuberger retired as the Republican National Committeewoman from New Jersey in 1980, Stevenson ran for the seat but lost to Noel Love Gross, the wife of former GOP State Chairman Nelson G. Gross.

Salem, New Hampshire: Salem is a town in Rockingham County, New Hampshire, United States.  The population was 28,776 at the 2010 census.  Salem is a marketing and distributing center north of Boston, with a major amusement attraction, Canobie Lake Park, and a large shopping mall, the Mall at Rockingham Park.

Pennsylvania Route 97 (Adams County): Pennsylvania Route 97 (PA 97) is a state highway in the U.S. state of Pennsylvania.  Known for most of its length as Baltimore Pike, the highway runs 9.363 mi from the Maryland state line near Littlestown, where the highway continues as Maryland Route 97 (MD 97), northwest to U.S. Route 15 (US 15) near Gettysburg.  PA 97 connects Gettysburg and Littlestown in southeastern Adams County.  The highway also links those communities with Westminster and Baltimore.  From PA 97's northern end, Baltimore Pike continues toward Gettysburg through the Gettysburg Battlefield Historic District, where it provides access to the Gettysburg Museum and Visitor Center.

Pennsylvania Route 97 (Erie County): Pennsylvania Route 97 (PA 97) is one of two Pennsylvania state highways that carries the PA 97 designation; the other Pennsylvania Route 97 is in Adams County.  The northern PA 97, 21 mi in length, is a north-south highway that terminates at Pennsylvania Route 8 at both ends.  The southern terminus is in Union City and the northern terminus is in Erie.  The Pennsylvania Department of Transportation (PennDOT) internally designates this road SR 0197 to distinguish it from the other PA 97.

U.S. Route 140: U.S. Route 140 (Pennsylvania "Legisltative Route 42") was a U.S. highway connecting Gettysburg, Pennsylvania to Baltimore, Maryland.  The route was deleted from the system in 1979; today the road's route is followed by portions of Pennsylvania Route 97, Maryland Route 97, and Maryland Route 140.

New Hampshire Route 97: New Hampshire Route 97 (abbreviated NH 97) is a 2.563 mi east–west state highway in Salem, Rockingham County, New Hampshire.  The western terminus of the route is in the center of Salem at New Hampshire Route 28 (Broadway).  The eastern terminus is at the Massachusetts state line, where the road continues east as Massachusetts Route 97 and continues on to Haverhill.  NH 97 is named Main Street along its entire length.

New Jersey Route 124: Route 124 is a state highway in the northern part of New Jersey in the United States that is 14.74 mi long.  It is the eastern section of what used to be Route 24 before that road was realigned to its current freeway alignment.  The western end is at an intersection with U.S. Route 202 (US 202) and County Route 510 (CR 510) in Morristown, Morris County; the eastern end continues as CR 603 on Springfield Avenue at the border between Maplewood and Irvington in Essex County.  The route runs through suburban areas of Morris County, passing through Madison and Chatham.  It interchanges with Route 24 on the border of Millburn, Essex County and Summit, Union County and serves as a frontage road for that route.  Upon splitting from Route 24, Route 124 continues east through Springfield Township, Union Township, and Maplewood to its eastern terminus.

Maryland Route 97: Maryland Route 97 (MD 97) is a state highway in the U.S. state of Maryland.  The route runs 55.27 mi from U.S. Route 29 (US 29) in Silver Spring, Montgomery County north to the Pennsylvania border in Carroll County, where the road continues into that state as Pennsylvania Route 97 (PA 97).  Throughout most of Montgomery County, MD 97 is known as Georgia Avenue, which continues south from the southern terminus along US 29 into Washington, D.C. It is a suburban four- to six-lane divided highway from Silver Spring north to Olney.  From here, the route continues as a rural two-lane road north through Brookeville and into Howard County.  MD 97 continues through Carroll County where it passes through the county seat of Westminster.  The route intersects many major roads, including Interstate 495 (I-495, Capital Beltway) north of Silver Spring, MD 200 (Intercounty Connector) in Aspen Hill, MD 28 in Norbeck, I-70 and US 40 in Cooksville, MD 26 in Dorsey Crossroads, and MD 27, MD 32, and MD 140 in the Westminster area.

Massachusetts Route 97: Route 97 is a south–north highway in Essex County in northeastern Massachusetts.  It connects the cities of Beverly and Haverhill before continuing into Salem, New Hampshire as New Hampshire Route 97.

Margaret G. Marucci: Margaret H. Marucci Kelly (May 8, 1912 – June 13, 2005) was an American Democratic Party politician who served as an Essex County Freeholder from 1962 to 1968.  She was elected Freeholder in 1961, and re-elected in 1964.  In 1965, Marucci, a widow, married James W. Kelly, Jr., a widower and the Mayor of East Orange, New Jersey.  Her first husband was Orange attorney Michael Marucci.  She served as Chairman of the Essex County Geriatric Center, as Vice Chairman of the Essex County Sanitarium, as Vice Chairman of the Essex County Psychiatric Hospital, and as a member of the Essex County Welfare Board.  She owned a dress shop in Short Hills.

Supporting paragraphs: Massachusetts Route 97 Salem, New Hampshire
Answer: Rockingham County