Lincoln the horseman

[STS Lincolnite]

I was re-reading a portion of Martin Johnson's fine book Writing the Gettysburg Address and the following passage (p. 172) captured my attention:

At some point, perhaps just as the procession was about to move, Liberty Hollinger remembered, "The band began to play and Mr. Lincoln's horse became excited and pranced around quite lively. It seemed to amuse the President, and then that sober, sad-faced man actually smiled." The noble, splendid charger turned out to be a "meddlesome steed," according to the Boston Journal, but luckily, another reporter added, Lincoln's "awkwardness, which is so often remarked does not extend to his horsemanship." The years riding the court circuit can attest to that.

I was wondering if anyone had read anything else related to Lincoln's skills as a horseman.