Who wrote this?

[RJNorton]

Excellent, Joe! It is indeed William H. Crook. I came across the quote in the The Journal of the Lincoln Assassination. Included in this edition is an article about William H. Crook which emphasizes his untrustworthiness as a source. The topic of Crook's unreliability has been discussed previously on this forum. O'Brien's quote is in relation to Crook's claim that he was a member of the Lincoln party in Richmond at the end of the war. Both O'Brien and Crook worked together in the Cleveland administration. O'Brien was using Francis Burke (coachman) as a source; Burke said Crook was not a member of the Lincoln party that traveled to Richmond.

https://en.wikipedia.org/wiki/William_H._Crook