Interesting. It was May 7 1901 that President McKinley and Vice-President Roosevelt visited Wickenburg, AZ.
http://www.wickenburg-az.com/2001/05/president-mckinleys-visit-to-congress-and-wickenburg/



From Hunting Trips of a Ranchman published in 1885 "I have two double-barreled shotguns; a No. 10 chokebore for ducks and geese made by Thomas of Chicago; and a No. 16 hammerless built for me by Kennedy of St. Paul, for grouse and plover. On regular hunting trips I always carry the Winchester rifle, but in riding round near home, where a man may see a deer and is sure to come across ducks and grouse, it is best to take the little ranch gun, a double-barrel No. 16, with a 40-70 rifle underneath the shotgun barrels."