Statistics for occurrence #1 of “Laura Keene” in chapter 20 of William H. Herndon, Jesse William Weik, Herndon's Lincoln: The True Story of a Great Life, Etiam in minimis major, The History and Personal Recollections of Abraham Lincoln by William H. Herndon, for twenty years his friend and Jesse William Weik:

...glesby, Senator Yates, and other friends from Illinois. He was invited by the manager of Ford's theatre, in Washington to attend in the evening a performance of the play, Our American cousin, with Laura Keene as the leading lady. This play, now so well known to all play-goers, in which the late Southern afterward made fortune and fame, was then comparatively unheralded. Lincoln was fond of the drama. ...
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Laura Keene 35 8 1 0 0 user votes

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