I picked up my first Latin dictionary at 19 after I found Kraft-Ebbing's "Psychopathia Sexualis" in a used book store. Kraft-Ebbing was one of the first, if not the first to academically discuss homosexuality, among other sexual practices. All the real naughty bits were in Latin so I needed that dictionary. And put it to good use.

It was assumed, at the time of the writing, 1894, that his audience was Latin fluent.