Here is a test print from yesterday's negatives. 4x5 pinhole image shot on 40 year old HP4, developed in HC-110 with 10ml of 10% KBr to reduce fog. Printed on Central Camera house-brand FB Matte paper, in Caffenol, and partially toned in Selenium.

dole-pinhole-caffenol.jpg

Definitely useable after all these years.
Cheers,
Tom