According to the excerpts, which author can you infer had the most interaction with many different horses? The text:In Mark Twain’s Words

One eyewitness account of the Pony Express in action was written by Mark Twain. He was the author of Tom Sawyer. Twain encountered at least one rider while on an 1861 stagecoach trip to Nevada. Here's what he wrote in his book Roughing It. The book was published in the 1870s.

The pony rider was usually a little bit of a man, brimful of spirit and endurance. No matter what time of day or night his watch came on, and no matter whether it was winter or summer, raining, snowing, hailing or sleeting, or whether his 'beat' was a level straight road or a crazy trail over mountain crags. He must be always ready to leap into the saddle and be off like the wind! There was no idling time for a pony rider on duty. He rode fifty miles without stopping, by daylight, moonlight, starlight, or through the blackness of darkness—just as it happened. He rode a splendid horse that was born for a racer and fed and lodged like a gentleman: kept him at his utmost speed for 10 miles, and then, as he came crashing up to the station where stood two men holding fast a fresh, impatient steed, the transfer of rider and mailbag was made in the twinkling of an eye, and away flew the eagle pair and were out of sight before the spectator could get hardly the ghost of a look.

Remembering the Pony Express

By the end of the nineteenth century, many books about the Pony Express were being published. By that time, many of the riders were dead. Some had died in battle in the Civil War. Authors tried to track down the surviving riders and station workers. By 1900, these men were in their fifties and sixties. They lived all over the West. The following comments by former Pony Express riders appeared in books published around 1900.

Will D. Jenkins:
How well I remember those days back in the early '60's, especially the old pony express days. Although only a “substitute,” I shall always retain a certain degree of pride in the fact that I “rode stations” on the old pony express, and that at a time and place when it was far safer to be at home.

Captain Levi Hensel:
I have been racking my brains to think of something about the pony express worthwhile to go in your book. I can't for my life think of anything that is not trite. The stirring incidents always occurred farther west than Seneca, where I was located. I had the contract to shoe the overland stage and pony express horses that ran from Kennekuk to Big Sandy up to the time I threw down my hammer and went into the army…. Sometimes they ran ponies in from Fort Kearney and beyond to be shod. No one up that far had proper facilities for shoeing bad horses. The animals that Johnny Frey and Jim Beatley used to ride were the worst imps in the business. The only way I could master them was get a rope around each foot and stake them out. I would have a man on the head and another on the body. They would squeal and bite all the time I was working with them. It generally took half a day to shoe one of them. But travel! They never seemed to get tired. I knew of Johnny Frey riding one of them more than fifty miles without a change. He was about as tough every way as the ponies. Jim Beatley was another off the same piece. Frey was one of the most noted of all the pony express riders. He never knew what fear was.

J. H. Keetley:
I made the longest ride without a stop, only to change horses. It was said to be 300 miles. It was done a few minutes inside of twenty-four hours. The ride was made from Big Sandy to Ellwood, opposite St. Joe, carrying the east going mail. I returned with the westbound mail to Seneca without a stop, not taking time to eat. I ate my lunch as I rode. No one else came within sixty miles of equaling this ride.

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