If #cooperatives (as opposed to other forms of mutuality) are understood to have emerged as institutions in response to the development of #capitalism, the earliest known modern proto-#coops are the #AntiMills of 18th century England.

As the #enclosures forced many peasants off the land, they crowded into cities to work in the docks servicing the Atlantic trade. In these quick-growing and anonymous cities in an era before food safety regulation, merchants would routinely adulterate food to...

... bolster their bottom line. In the 1750s, millers went too far by adding powdered white lead to their flour, which poisoned many people. After a riot in which a number of the offending mills were sacked, consumer-owned flour mills were formed and the model was fairly widely adopted. A bunch of records from the #HullAntiMill, which was formed towards the end of that wave, have been preserved, but lots of that history has been lost...

https://archiveshub.jisc.ac.uk/search/archives/2b5dbe96-674a-361e-b997-aeebdcb7ab90

... The experiences of the Anti-Mills definitely influenced the work of #RobertOwen, and it was in the aftermath of the #Owenite movement that a group of former Owenites founded what the standard historiograhy remembers as the first modern co-op in #Rochdale, England in 1844.
@mattcropp thank you for this! Even as I dutifully repeat the Owen-Rochdale-salvation story, I get the impression it is pitifully incomplete and chosen for self-serving ends I'm only dimly aware of.