A recent treasure to come into my hands is Beauty and the Beast: Human-Animal Relations as Revealed in Real Photo Postcards, 1905-1935 (2010) by Arnold Arluke and Robert Bogdan. You really can’t go wrong with this one. Above, a postcard from 1911, and below, one from 1908.
You might expect the usual dogs and cats to show up in the lap of the owner, but they are only the beginning.
Boy with pet owls, 1911
Boxing great James Jeffries with lion cubs at the Chicago Zoo, 1921
Girl with pony, 1909
These are just a few of my favorites; I am sure you will find yours somewhere in the more than 250 pages of this marvelous collection.