This page lists all the 1930s Racers. There are currently five in the game. These planes only give XP and take almost no passengers to fly.
“The Racer-Red Lion is a direct upgrade to the 1930s Racer-Hughes. Costing 15 AirCash it is rare...1930s Racer-Red Lion
“The 1930s Racer-Hughes is one of five 1930 planes in the game. It is the only 1930s racers that...1930s Racer-Hughes
“The 1930s Racer-Mr. Mulligan is a plane that costs AirCash, however it can be unlocked by...1930s Racer-Mr. Mulligan
“The 1930s Racer-GeeBee is one of the five 1930s Racers. It is the last 1930s Racer you unlock...1930s Racer-GeeBee