Mayhew's Biographies by Henry Mayhew

Published by Harper & Brothers
1. Boyhood of Martin Luther (Copyright Harper & Brothers in 1864)
2. Peasant Boy Philosopher (Copyright 1855)
3. Wonders of Science (Copyright 1856)
4. Young Benjamin Franklin (copyright date unknown)

Harper & Brothers published these books between about 1866 and post-1900.
It does not appear that they all had the same format at any given time.
Some examples are shown below.

Later in 1878 these books were part of the 100 volume “People’s Library” published by Harper & Brothers.

Engravings

Cloth. Various colors. Blindstamped with various embossed patterns. Gilt spine lettering decoration and book specific illustration or decorations. 16 mo

Young Benjamin Franklin 1868

Wonders of Science 1856

Wonders of Science 1870