Cruising Grounds: Seeking Sex and
Claiming Place in Houston, 1960-1980
By Dr Brian Riedel

LINK

I much recommend viewing this excellent article at the link above,
to be able to take advantage of the many resource links.....

However, knowing that internet links may not last forever,
this article is much too valuable to chance its loss, so I grabbed these images

Link to this 4 minute animation

Also watch this wonderful related talk from 2015
LINK