I am eagerly trying to find this volume for my research.  According
to WorldCat, the New York Public Library has the only copy and it is
missing!  Can anyone help?  Here is the citation.

Thanks,
Jeff Taylor

Title:       The fundamental principles involved in the composing and
               arranging of music for the player-piano
Author(s):   Schaaf, Edward Oswald, 1869-
Publication: [New York] The Music Trade Review
Year:        1919-1920
Description: v. p. illus. (music) fol.
Language:    English
SUBJECT(S)
Descriptor:  Player piano.  Music -- Arranging for player-piano.
Note(s):     Excerpt: The Music Trade Review, May-Dec., 1919,
  Jan.-Oct., 1920./ Caption-title./ On cover: Player piano. Arranging,
  series, no. 2.

 [ Apparently Dr. Schaaf published this book as a series of articles
 [ in Music Trade Review (MTR).  The eleventh article of the series,
 [ entitled "Speed," is posted at
 [ http://www.arcade-museum.com/mtr/MTR-1920-70-13/MTR-1920-70-13-05.pdf 
 [ -- Robbie