I am not aware of any Trad only clubs, but traditional archery is alive and well in WNY. There are a fair number of tradarchers at Double T in Amherst NY and an even latger number at Hawkeye Bowmen in Marilla, NY. Both club hold Traditional Shoots. Hawkeye is done with it's public shoots for the year, but Double T usually has a shoot at the end of Sept, early October for traditional.
A buddy of mine teaches selfbow building classes. Also there is Gerry Fiegl of Northwind Bows builds some of the best shooting bows at reasonable prices in the industry. There are plenty of guys with know how willing to share.
Best of luck,
Glenn