Ailephroid: first ascension
Il 7 luglio 1870 William Augustus Brevoort Coolidge, Christian Almer e Ulrich Almer raggiungono per la prima volta la vetta dell'Ailefroide (3954m) nel Massiccio des Écrins.
Herbétet: first ascent
On 22 August 1873, a rope team consisting of Antonio Castagneri, Giuseppe Castagneri and Leopoldo Barale reached the summit of Herbétet (3778m) for the first time.
Gottlieb Samuel Studer is born
On 5 August 1804, Gottlieb Samuel Studer was born in Langnau im Emmental (Canton Bern), a Swiss mountaineer who was the first ascender of the Wildhorn (3248m) and one of the founders of the Swiss Alpine Club. In his mountaineering career he climbed more than 650 peaks.
.William Martin Conway is born
On 12 April 1856, William Martin Conway was born in Rochester, a British explorer and mountaineer known for a number of notable ascents in the Alps, Andes and Karakorum.