Of course there is Ed McCurdy who recorded a series of albums "When Dalliance is in Flower" plus another series called "Lyrica Erotica". These are the songs that the Francis Child's of the world did not want us to discover!   

I often wonder how many great songs were never saved because the collectors used their own self-censoring of the material.

By the way, Ed used to correct anyone who called his songs "bawdy". "Oscar Brand sings bawdy songs" Ed told me, "I sing erotic ballads". He was 100% correct, there is a big difference.