1941 Sheet Metal Work William Neubecker American Technical Society

1941 Machine Shop Work Turner Perrigo Bertrand American Technical Society

Modern Shop Practice Volume 8 (1940) by American Technical Society

Greece from the Air. Janine Trotereau Yann Arthus-Bertrand BOOK

In Praise Of Idleness Bertrand Russell Vintage 1962 Paperback Book Printed in UK

Machine Shop Work 1920 Turner Perrigo Bertrand American Technical Society

Lathe Design: Construction and Operation Oscar’s Perrigo Illustrated Metal Work

Vintage Set of Cyclopedia of Engineering by American Technical Society 1915