Hiram Percy Maxim and Clarence D. Tuska, Coupon Page (1916)
“ I am enclosing $5 for which kindly send me by return mail, Zenneck’s Wireless Telegraphy, and enter my name for a year’s subscription to “QST.” Name Street City and State This work is in the public domain in the United States because it was published before January 1, 1929. ”
