My first camera was a Brownie Hawkeye. Came with the developing and printing kit included. I loved that old camera and burned through many rolls of film with it.
You can't buy film for it, but you can buy the companion rolls and respool them onto the old reels, which is not hard, just a bit tedious. It takes a 620 spool, which are available if you look hard enough. You buy 120 film and, in a DARKROOM or DARKBAG, unspool the 120 and wrap it back on the 620 spool. The later versions will take the 120 spool in the top and use the 620 spool only in the take up slot.
http://www.brownie-camera.com/27.shtml
http://cclemens.tripod.com/Brownie/Hawkeye.htm
http://www.davidrichert.com/brownie_hawkeye.htm
There are many other sites to look at, but this is a quick look at what you have. Keep it for the treasure it is.
Pops