Paperback 48 page The How and Why Wonder Book of Basic Inventions. Original price was .69. Printed in 1965. Written by Irving Robbin; illustrated by Leonard Vosburgh; edited by Donald D. Wolf. Printed by Grosset & Dunlap in NYC. Topics include the first toolmakers, fire, agriculture, the wheel, gunpowder, printing, optics and from then till now. Some drawing coloring looks very retro, as in limited to 2 colors per rendering.