Mates Series by Kirk Munroe

Published by Harper & Brothers

Harper & Brothers published the first editions of these titles. They were first described as belonging to the "Mates Series" after the second volume was published.
The four books were also sold as a boxed set.

First editions have the copyright date on the title page.

These four titles were also included in the Harper's Young People. Second Series

Illustrated

Cloth. Green / blue. Silver gilt lettering and decoration on the spine and the cover. 8 vo.