Guilds, Societies, Unions etc.

[David Nilsson]

Please can anyone tell me, if there are any kinds of online 1950's Guilds, Societies, Unions etc, that a ropeworks owner or worker, may have belonged to in Sweden.
 
I am mostly intersted in the Stockholm area and North of it, and people with a Nilsson surname, and especially if they owned a ropeworks up to 1956/1957, when they died.
 
I don't know the name of the person or ropeworks, or where is was.
 
Any help/pointers are most appreciated
 
David Nilsson