Waaaaaaaay too many...
I recently went on a used-WTBTS-book-buying spree... Here are the titles I picked up - most for around a dollar or so...
"The Divine Plan of the Ages" ("Studies in the Scriptures Series 1") copyright 1908
(pamphlet...) "MIllions Now Living Will Never Die!" copyright 1920 but a 1940 reprint...
"The Harp of God" copyright 1921
"The Divine Plan of the Ages" copyright 1923 - this one FINALLY had the "Pyramid chart" in it and intact!!
"The Harp of God" copyright 1925
"Government" copyright 1928
"Enemies" copyright 1937
"Children" copyright 1941
"The Divine Plan of the Ages" ("Studies in the Scriptures Volume 1") copyright 1946 - no Pyramid chart...
"Did Man Get Here By Evolution or by Creation?" copyright 1967
"The Truth that Leads to Eternal Life" copyright 1968
"The Truth that Leads to Eternal Life" copyright 1968 but REVISED 1981...
"Then is Finished the Mystery of God" copyright 1969
"The Nations Shall Know that I am Jehovah - How?" copyright 1971
"True Peace and Security - From What Source?" copyright 1973
"Good News to Make You Happy" copyright 1976
"Choosing the Best Way of Life" copyright 1979
"All Scripture is Inspired of God and Beneficial" copyright 1983
Just a sampling...
I'm looking forward to skimming these books, since I haven't picked one up after I DA'd myself... With my eyes opened, I wonder what sort of contradictions and idiocy I'll see in them, now...
Zid