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You may jump directly to one of the following highlights:

• A biography of Edwin H. Armstrong

• Origin of this, the Houck Collection

• A biography, with additional background and photos, of Harry W. Houck

• Photo of the original regenerative receiver (1912)

• Photo of de Forest Audion used by Armstrong (1912)

• Armstrong's first major article "Operating Features of the Audion" (1914)

• Photo of Foote, Pierson & Company relay belonging to M. I. Pupin (early)

• Armstrong's Western Electric building pass (1917)

• Armstrong's appointment as Captain in the U. S. Army Signal Corps (1917)

• Armstrong's Signal Corps test report on the French A-1 and American AR 4 trench receivers (1917)

• Photos of trench receivers used in WW1: French A-1, American AR 4 (BC-14) and BC-14A (1917)

• Photo of the American DT-3 Vacuum Tube Detector Unit (1917)

• Armstrong's disclosure of his superheterodyne invention (1918)

• Original Signal Corps drawings of the superheterodyne receivers made by Armstrong and his men (1918)

• Armstrong's British superheterodyne patent application (1919)

• Armstrong's promotion to Major (1919)

• Lengthy conference report on future equipment, personnel and methods of operation in the Signal Corps (1919)

• Armstrong receives the French chevalier de la legion d'honneur (1919)

• Letter from H. J. Round (1920)

• Letter from Westinghouse congratulating Armstrong on his regenerative court victory over de Forest (1921)

• Letter from Dr. J. A. Fleming on the court victory (1921)

• The first amateur transatlantic short-wave station, 1BCG (Radio Club of America) (1921)

• Armstrong's public disclosure of his superregeneration invention (1922)

• Development of the second harmonic superheterodyne receiver (1923)

• Photo of Armstrong and Houck with various superheterodyne receivers (1924)

• Letter from Armstrong to Houck on performance of prototype superheterodyne (1923)

• Photos of prototype second harmonic superheterodyne (1923)

• Photos of Empire State Building FM equipment (1934)

• Disclosure of FM inscribed by Armstrong to Harry Houck (1936)

• Beginning of Armstrong's FM station W2XMN at Alpine, NJ (1937)

• First production FM receiver, by General Electric (1937)

• W2XMN log book (1938)

• First commercial FM receiver, the REL Model 517 (1938)

• Photo of Armstrong in boyhood bedroom (1947)

• Autographs on Radio Club of America banquet program (1948)

• First FM multiplex broadcast, KE2XCC (old W2XMN) (1952)

• Armstrong's death (1954)

• Closing of Alpine station (1954)

• Correspondence between Carl Dreher and Lee de Forest (1956)

• A list of all Armstrong publications, with an introduction by H. H. Beverage (1960)