F. E. Olds was a manufacturer of musical instruments founded by Frank Ellsworth Olds in Los Angeles, in the early 1900s. The company made brass instruments, especially trombones, cornets, and trumpets. Olds was joined by his son Reginald Birdsall (R.B.) Olds in 1920. The company was purchased by Chicago Musical Instruments after World War II, and went out of business in 1979.
Technician applying engraved foliate decoration to the bell of a brass horn with a knife-like tool at the F. E. Olds and Son plant (probably a cornet, trumpet or trombone). Several engraving tools and a bowl of water (?) are on the work bench in front of him. He holds the horn with a piece of cloth and the bell of the horn rests on a piece of cloth. He wears a visor and a leather apron.