National directory of survival radio frequencies

The "top secret" registry of U.S. government radio frequencies

Tune in on Telephone Calls

Air Scan Guide to Aeronautical Communications

Tomcat's Big CB Handbook

Top Secret Registry of U. S. Government Radio Frequencies

The Top Secret Registry of U. S. Government Radio Frequencies 25 to 470 Mhz

Rail-scan directory of railroad scanner frequencies

Radio station treasury, 1900-1946

Directory of U. S. Army Forts, Camps, and Airfields 1789 to 1945

CBers' SSB handbook

Air-scan directory of aero band scanner frequencies