FIRST RESPONDER PATCH COLLECTORS

Hello I was wondering if this is an acceptable place to talk patch collecting or not?

I am wondering about if there are any good patch collection forums or sites out there for folks from a wide variety of first responder collectors/contributors>(police, fire, paramedic, military, naval/marine/forestry , special operations etc etc)?

My father was an avid collector f all kinds of things from motorcycle an car parts to specialty tools and literature/magazines but he also really loved collecting patch from all branches which i just dont have a lot of interest in keeping all of these so I am working on what where or how to sell them if anyone is interested.