Ok..... I'll answer my own question. After a little research, I discovered
the following. My supplier lead me to believe that these specs had been
recently revised. They were wrong.

First - MIL-P-13949 F, paragraph 3.8 included a requirement for a water mark.
Rev G (released in 1987) omitted the requirement in paragraph 3.8.

Third - IPC-L -115 B, requirements are word for word from paragraph 3.8 of
MIL-P-13949 G