Comment by oso2k

Besides the Asphyxia Trainers, back then there was also HelpPC [0], PCGPE [1], RBIL [2], and mammon_'s work in ASM Journal [3] available on BBSes and early interwebs.

[0] http://stanislavs.org/helppc/

[1] http://www.oocities.org/siliconvalley/2151/pcgpe.html

[2] http://www.ctyme.com/rbrown.htm

[3] http://mattst88.com/programming/AssemblyProgrammersJournal