Inherited Rolleiflex 1a model 3: Questions

[abbypanda]

I'm a professional photographer. Today my grandfather gave me an old rolleiflex that appears to be a 1a model 3.
I dont know much about film other than the 35 mm we had as a kid. And it's been so long.
Anyway,

I was given today by my grandfather what appears to be a rolleicord 1a model 3. Looks like it belonged to my late grandmother's uncle....

Anyway, I don't know a ton about film other than the 35 mm my mom had as a kid, and it's been so long.

The rolleicord I "inherited" .... It also had film in it! on #12 so the last one... but unfortunately my mom opened it so who knows, but I finished winding it and extracted it. I might be able to salvage the first photos.

A few questions:
1. where can I send it to be developed? I do not know any local labs or camera stores any more that service this old of a camera.
2. where can I buy more film for it? (sorry dont know too much about film It uses Kodacolor c22 color negative 120 film)

I tested it and it does work. (I was told to point it at bright light after removing the film and if I saw a flash when I moved the shutter it worked, and there was def a white flash) So... I'd love to see what's on it, I'd love to test it out with more film! Also is there a good service place for old cameras that can clean it. I am a little afraid to mess too much. It looks in "OK" condition.

Thanks, tell me everything I'm so excited. Photo attached.
How can I clean the viewing glass.

[eieikuean]

[nctu127]