Q. Can someone read in a bathroom stories of tzadikim or Jewish history (kosher) seforim?
A. Vayivorech Dovid (1: 15) and others maintain that it depends on the disagreement mentioned in last question,(2423). Piskei Teshuvos (85: 3) argues that it could be that all agree that it is permitted, when no psukim or sayings of the sages are quoted, (and one controls the mind on not pursuing them). See also questions 2227, 2228 and 2229 as to what is considered Torah.
Horav Shlomo Miller’s Shlit’a opinion is similar.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a