3 ms·
Wasn't miniaturisation of photos used to get airmail out of the Paris commune in 1871? So less than 20 years after this.
by ggm-at-algebras 1y ago
Wasn't miniaturisation of photos used to get airmail out of the Paris commune in 1871? So less than 20 years after this.
- Y_Y 1y ago> A microphotograph by René Dagron, containing military communications, transported by carrier pigeon during the Siege of Paris, 1871 If only you'd read the fine article!