Leonard Visits Space (1965)

Leonard visits space is part of a series of books about Leonard and his time machine. He uses it to visit events and people in history.

Leonard visits space. 
Gene Darby. Illustrated by Ric Hugo
San Francisco: Harr Wagner,  1965.
44 p. 25 cm. "Leonard and his time machine" series.

.
Admittedly this is not non-fiction for children as much as science fiction about a real event. However I really enjoy the simple text that goes with the illustrations.

So 1962 suggests John Glenn and his orbital trip around the earth.

"Oh! Oh!"(No Sh... Sherlock)

U.S.S. Noa confirms this is John Glenn.

"President John Kennedy" from the back"