Conversation so far:
What is the first production Edwin Booth was in?
Edwin Booth performed alongside his father, making his stage debut as Tressel or Tressil in Colley Cibber's version of Richard III
What is Edwin Booth's most famous production?
Some theatrical historians consider Edwin Booth the greatest American actor, and the greatest Prince Hamlet, of the 19th century.
What was Edwin Booth's accomplishment at the peak of his career?
Edwin Booth began a production of Hamlet on the same stage, which came to be known as the hundred nights Hamlet, setting a record.
Did Edwin Booth's career suffer any pitfalls?
After John Wilkes Booth's assassination of President Lincoln in April 1865, the infamy associated with the Booth name forced Edwin Booth to abandon the stage for many months.

Question: When did he return to the stage?
Self-contained rewrite: When did Edwin Booth return to the stage after abandoning it for many months?