He got the call W7BRS in 1931.
I didn't know until 2008 that W7BRS was his callsign. When I learned this, I changed my call to W7BRS.
Hershel built radios as a teenager with John Grubel ex-W7RT (SK) when they lived in Alaska. Grubel was active in 6m also. Grubel Photo Credits, Rick Tannehill - W7RT.
The Grubels and Wandling's' moved back to Seattle about the same time in the 20s.
Hershel was also a member of the Franklin High School ARC (Seattle) in the 20s, and the American Legion Amateur Radio Club in the 30s.
I've found some documentation about his licenses and activity:
His Radio License application he filed when he was 17 years old:
Front of Application
Back of Application
Test Results for W7BRS
Certificate for License, before the FCC was formed:
Front of Certificate
Back of Certificate
Blank W7BRS QSL Card
His Portable License
Copies of The American Legion Emergency Radio Net Roster, November 27, 1940. Director and Key Net Control: W7CKJ
Page 1 - High Res | Low Res
Page 2 - High Res | Low Res
Page 3 - High Res | Low Res