Where can you get information on a Dickson Falcon 12 ga single barrel serial 11419?

The Dickson Gunmakers of Philadelphia did make a single-barrel shotgun referred to as the Falcon during the period of 1929-1934.

The number 11419 is in the range of serial numbers for the Falcon. Based on the serial number, the shotgun was likely made in 1933.

For additional information, you may want to contact the American Single Shot Society or the National Single Action Association.