Everard was born in 1924 and recruited into the Time Patrol in 1954 and is last seen by us on 8 March 1990. To be more precise, we last see him on 11 October 1307 but, in this post, I am discussing his twentieth century lifespan. From some time before his recruitment until at least 1990, Everard lives in a single apartment in New York.
A trainer at the Time Patrol Academy in the Oligocene period says:
"'...the hunting and fishing are still pretty good even in this neighborhood, and if you fly just a few hundred miles they're fantastic.'" (Time Patrol, p. 8)
Later, Everard and Whitcomb ride outside the Academy and:
"Everard had a rifle, in the hope of bagging a shovel-tusker he had seen." (p. 15)
"The hunting is good in Europe twenty thousand years ago..." (p. 173) -
- so the Patrol has a Lodge in the Pyrenees. When Van Sarawak says that mammoths have been spotted, Everard replies, "'I've bagged one.'" (p. 174) However, when he revisits the Lodge with Wanda Tamberly, they hunt:
"...for mammoth, reindeer, wild horse with camera rather than gun. Born and raised when she was, Wanda disapproved of blood sports. His background had been different." (The Shield Of Time, p. 294)
Everard's class at the Academy was recruited from the 1850-2000 period so they would have included some with Wanda's attitude. Everard recruited her to the Patrol in 1987.