Vintage 1952 Booklet: Slide Rule Instruction Book Engineering Instruments

Vintage 1950s Lawrence Slide Rule instruction Book - Great Colors

Vtg The Quick and Easy "Lawrence" Slide Rule Instruction Book, (PB, 1939)

1945 Fredrick Post Company Slide Rule Instruction Book

Vintage 1939 The Quick and Easy "Lawrence" Slide Rule Instruction Book, 1939)

Vintage Lawrence Slide Rule With Instruction Book

Vintage Lawrence Engineering Service 10-B Slide Rule, 1940s

Vintage Taylor Publishing The Copyfitter 12-H Slide Rule - Made by Lawrence 1946