How much for 71 Thermoquad?

The article supplied information to hot rodders/racers on to how to improve the performance of the TQ carb. Those providing the information were people with specialised knowledge of the TQ & the magazine was merely the 'vehicle' to provide said info. Today it would be done on You Tube...
The TQ was not around in 1930; so that might explain why there no magazine articles in 1930...