In 1924, the Trego Radio Mfg. Co., 1427 Chestnut St., Kansas City, MO, offered this one-tube set, the “Baby Grand” in their catalog.  For $28.75, you got everything you needed, including the tube, batteries, and even antenna and ground wire. The batteries even came installed inside the set, which was said to have a range of 500 to 1000 miles.

The set was also available without tube, batteries, or other accessories, for $15.35.