Back in the Day

When I was a "kid", I carried all of this. One camera
loaded with slow, fine-grained B&W film
(Kodak Panatomic-X) and the other with Kodak Tri-X. I
usually "pushed" the Tri-X to ASA 800, or higher, in the
dark room. I had no passion for medium speed B&W film
or artificial light. Packed away in storage is a Yashica
twin lens reflex camera. I sold the Graphlex and the Bolex
many years ago.

http://www-unix.oit.umass.edu/~coreya/yashica/yashicamat124.jpg
http://www.graflex.org/speed-graphic/pacemaker-speed-graphic.html
http://homepage.newschool.edu/~schlemoj/film_courses/bolex_rotate_1.html