You may also wish to search for items by Tibbetts, M. and Tibbetts.
Only one matching reference was found.
van Praag, M.; Stein, H.S.; Tibbetts, M.S., Steam volatile aroma constituents of roasted cocoa beans, J. Agric. Food Chem., 1968, 16, 6, 1005-1008, https://doi.org/10.1021/jf60160a011 . [all data]