Anyone can take an awesome photo today just by pulling their phone out of their pocket, but that wasn’t always the case. The entire idea of regular people being able to take snapshots hinges on one ...

Begins with unslit regular-8mm Kodachrome (r.i.p.), projected as 16mm, documenting the rubbing of a Kodak r8mm Brownie camera, then the actual rubbed Brownie stuff - rubbed with 'heelball' rubbing wax ...