Deems Taylor: A Biography
By James A. Pegolotti

The indispensable biography by James Pegolotti is highly recommended for anyone interested in Taylor’s life.
 

If one looks back on his achievements, even with his disappointments, it seems Taylor had a pretty good time. He was often happy and contented, and he gave people pleasure and edification. 
NY TIMES DEC 7, 2003

 ...it is a special challenge (and a delight, from my own personal experience) for anyone to set out to write the first major biography of a musical luminary who was influential in his day but has little name recognition among the current generation. That is what James A. Pegolotti has done with his engrossing Deems Taylor: A Biography
EUGENE H. CROPSY (OXFORD PRESS)