où l'on se pose la même question... et voici une réponse qui me semble intéressante :
Telemarkman a écrit :
The two prototype Teles (1949) were made of pine, as were the first batch of Esquires (1950, black). However, because pine was a rather soft wood that dented easily, and also because Leo decided to go for a transparent blonde finish, ash was selected because it was relatively hard, relatively cheap, easily available and had a great grain pattern.
When opaque custom colors came into use in the early 60's, alder was selected for these bodies, because grain pattern wasn't an issue and alder was an even cheaper wood than ash.
I doubt if Leo would ever have imagined that there would be weekly discussions about the virtues of ash vs. alder 50 years later on a Telecaster forum.