Recent research reveals the payments (per opera performance) that Lehmann received at the Metropolitan Opera. You’ll see other well-known singers of the time, and the amounts they were paid. Remember that this was shortly after the Depression. Also, the dollar in 1935 is worth about $22 as of 2022.

1935: Lehmann: $700

Rethberg: $900

Pons: $1000

Flagstad: $550

Melchior: $900

from 1936-on (the data is a little confusing), Lehmann was paid $750 ($16,500).