“In 1935, Northern Tissue advertised its toilet paper to be “splinter-free.” Apparently, early production techniques managed to embed splinters in the paper.”
Not splinters exactly, but I have used some very old (and very cheap) paper that had what appeared to be little tiny wood chips in it. And yes, I looked AFTER I felt.
I had a rejection letter for a short story I wrote (small press F/SF mag) that had lots of check mark spots for different reasons they rejected it. One said “I’m sitting in the smallest room of my house. Your story is before me but soon it shall be behind me.” Luckily that wasn’t the one checked for my rejection.
Eastern Europe (and elsewhere in Europe?) they still use tree bark and other coarser wood materials for TP. Best to bring your own favorite.