Canfield: Henry Hadley: His Life and Works  John C. Canfield : Florida State University, 1960  (published by University Microfilms, Ann Arbor, Michigan ).

Boardman Henry Hadley, Ambassador of Harmony  Herbert Boardman, 1932  Banner Press, Emory University, Georgia ( available on Google Books)

Buck: Music and Musicians in Bohemia, The First One Hundred Years, A Research Document -  Richard P. Buck, 2005  Published by the Bohemian Club, available in the San Francisco Public Library and various academic institutions in the San Francisco area.

Lewis: "The Ream of Serious Art": Henry Hadley's Involvement in Early Sound Film, Hannah Lewis, Journal of the Society for American Music, 2014, Vol. 8 No. 3 pp. 285-310.

Except where specifically noted, images are from private collections.

Timeline Page :

1 - Canfield p. 163.

Ginn Recordings page:

1 - Music Appreciation in the Schoolroom, Thaddeus Giddings, Will Earhart, Ralph Baldwin, Elbridge Newton. Ginn and Company Boston, 1926.

2 - Wikipedia - "Gennett Records".  Gennett Records began using RCA electical processes in 1927, one year after Western Electric began using electrical disk recordings for its Vitaphone movies.

3 - Music Appreciation in the Schoolroom, p.18-19

4 - Internet site: "Gennett Records Discography The First Indie Label", article for Feb. 17, 2014 ( search: "Hadley")
  "Feb. 17th in Gennett History, 1925: The New York Philharmonic recorded four sides in the NYC studio presumably with Henry Hadley at the podium. These recordings were released on both Gennett and Ginn."  Charlie Dahan. Read on 9/16/2014.

Appreciating When A Man Loves page:
"Henry Hadley Talks on Writing Music for the Movies",  Musical Courier, December 9, 1926

Hadley in Sommerville page:

1 - Souvenir School Directory of Sommerville, published for The Teachers' Annuity Guild, Philip J. McGrath, Boston, 1896 (127 pages of illustrations, text, and advertising).

2 - Canfield, p.31-33.

3 - Canfield, p. 34.

Hollywood Gallery :

1 -  Film Music Notes, July 1946 Special issue, A salute to Warner Brothers and Twentieth Annicersary of Sound. Henry Hadley and the Films, Mrs. Henry Hadley (Inez Barbour ).

Early Recordings :

1 - All early Victor and Columbia records are described in Discography of American Historical Recordings. UC Santa Barbara Library, 2014. Web. Read: 28 September 2014.

2 - Duo-Art Piano Music: A Complete Classified Catalog of Music Recorded for the Duo-Art Reproducing Piano, Charles Davis Smith, Aeolian Hall New York/London1987 .

Hadley in San Francisco :

1 - Canfield, quoting article, p. 115.

Hadley in Seattle :

1 - Internet article: " Moore Theatre (Seattle) Essay 3852, Eric L. Flom and John Caldbick, May 6, 2012.

2 - Internet article: "Wappenstein, Charles W. (1852-1931) Essay 8904, Junius Rochester, January 27, 2009

3 - The Stimson Legacy - Architecture in the Urban West Lawrence Kreisman, Seattle, Willows Press/University of Washington Press, 1992.

Victor Herbert :
1 - Canfield, P. 68
(page under construction)