["W2SZ equipment.","Written on the back of this photograph is the following: W1BB 250 WA3 - 500 WA on all Bands; 2-6-10-11-(15)-20-40-80-(160); Rotary Beams on 2-6-10/11-20; Also portable and mobile 10-100 watts on all bands; "Ham" Since 1912 Call "SS" 1917 Licensed photo '48."]
Institute Archives and Special Collections, Rensselaer Polytechnic Institute, Troy, NY.