More money for the research fund is generated if you buy mom's book from lulu.com
http://www.lulu.com/shop/b-w-schulz/separate-identity-organizational-identity-among-readers-of-zions-watch-tower-1870-1887-volume-2-culture-and-organization/paperback/product-24467519.html
But if you must buy from Amazon, it is now there:
https://www.amazon.com/gp/product/1678009245/ref=dbs_a_def_rwt_hsch_vapi_taft_p1_i0
Too new for many reviews, but all of them have been positive so far.
I miss my mom.
Annie