I saw where someone had posted this picture on facebook and thought it was cute, So abovev is extracted the original full page image from the Radio News June 1938 edition, page 24:
https://www.worldradiohistory.com/Radio_News_Master_Page_Guide.htm
Note that the caption says
"SET REPAIRING CAREFULLY DONE BY EXPERIENCED SERVICEWOMANI
Found interesting a lot of the books. Was reading a few of them. Compare those times to now. Homes had those floor standing radios and you called service people who did house calls, just like TV later. Most of the time for tube replacements. Now, no such thing. that whole industry of servicing things is gone. Now it lasts so long and then you get another.
Nowadays, call the serviceman?
@mark Back then those doing house calls and hustling to sell, service and modify radio equipment were known as "Jobbers". There's some interesting articles about them found in 1930s-40s magazines.