Those who served during the periods the battalion was attached to 29th Division would be eligible for membership in the division veterans association. If you're seeking info on a former member you might try:
29th Infantry Division Association 5928 Robindale Road Baltimore, Maryland 21228-1224
Chin Strap John E. Wilcox, Jr., Editor 807 London Court Frederick, Maryland 21701-4446
Perhaps they can put you in touch with someone who remembers him.