From the University of Haifa Younes, Soraya Nazarian Library, vis-a-vis Atlas Obscura.

The wonderful and underrated online publication, Tedium, has an intriguing (and hilarious) longform piece on the history of microfilm: Honey, I Shrunk The Page</strong>.

"Microfilm’s first innovation: Improving carrier pigeon efficiency" - Ernie Smith, Tedium