KAEMPFFERT, WALDEMAR BERNHARD, ed. A popular history of American invention. Vol. 1-2. v. 1. Transportation, communication, and power.
KAEMPFFERT, WALDEMAR BERNHARD, ed. A popular history of American invention. Vol. 1-2. © Waldemar Kaempffert (A) v. 1. Transportation, communication, and power. © 17Oct24, A808447. R99980, 23Sep52.
Waldemar Kaempffert|A