How would people in the 20th century find a niche store

Question

Say you were in the 1920s or 1970s. If you wanted to find a store to buy music or just any store that catered to a specific niche, how would you have gone about finding out what your options were?

In: Other

Answer 1

Three main sources – you’d talk to people with the same interests, you’d read specialized newspapers/magazines and you’d talk to staff at the niche stores you visited.

Not as time effective as searching the internet, but I miss it.