u/MechaniCatBuster

I know some of the basics:

• City Hall for things like civil records (Blueprints, death certificates, deeds etc.)
• Libraries for history and general information (general info about the area, historical accounts, books on cults or natural phenomena etc.)
• Newspapers for reporting and current events (Old articles about a family, articles about disappearances, etc)
• Police Station (info on crimes, murders etc)
• White pages? To help locate someone?

But are there more? What other "always available" investigation options existed in the 1920s?

Resources you might use to pick up the first strand so to speak?

So you can find useful stuff in libraries and city hall and such. But when is it too much? When do you say "The cops won't allow you to access that" or "City Hall lost the blueprints for that building" or something else of that nature? When is it too much?

Looking for opinions. Want to fine tune play, so that I know what are reasonable breadcrumbs for players, but also I don't want to ask for something I shouldn't AS a player. So looking at it from both sides the GM screen.