The WTS helped Marley Cole initially vanity publish his "Faith on the March" personal history of the JWs.
I found that out when my then-wife, many decades ago, sent for some self-publishing info for me, and there in their advertising lit was info on Cole's book, which with the WTS's help, they noted, became one of their biggest sellers.
Self-publishing today is becoming a much more acceptable means of getting your work out, made easier through computers, the Net, and print on demand.
S4