A. J. Carter
A. J. Carter owned the Carter Radio Co. in Chicago, a manufacturer of radio components such as rheostats. Carter became interested in television, and collaborated with U. A. Sanabria in building Sanabria's first television station at WCFL.
Popular Science, March 1927
Carter's radio plant also manufactured receivers using Sanabria's designs. These sets were demonstrated at radio shows in Chicago and New York. The article below mentions a 5 x 5 inch screen, which describes the Westen model 41, which used a lens disk. However, the 41 wasn't introduced until about 1932.
Reminisce Magazine, August-September 2009
Courtesy of Linda Lopez