These show what the envelope said was "T.V. Mart".... although I suspect it's TV Market. The address on the front of the building is 3634 but could be east and west or north and south.... there is a reflection on the window glass from the building across the street. The signage on that is "Dr. Lilyhor Chiropractor". There is also a reflection of a cleaners that can be partially read: "...erles Cleaners." So the location can be pinpointed at a later date.
This is probably promotional work for the site showing that they have a full range of the latest models including those with phonographs and TVs as well as a repair facility (tubes anyone) and men who will make house calls.
Television was just coming into it's own around this time as the stars of decades of radio shows were making the move to the little screen.
The image of the man on his knee getting ready to fix the tv is an unfortunate double exposure... easily done back then when the 4x5 film was in negative holders (two to a holder) and you had to remember to take out the holder and turn it around for the next shot.