From the "Oldies" Department, these are some I have, most very exciting writing with contemporary photos/illustrations, all concentrating on FDNY. I remember getting some from the local library - over and over - in the 1950s. They are all worth trying to find.
Fire Fighters and Their Pets, Alfred M Downes (1907)
Fire Fighting, Jos. J. O'Reilly (1911)
Fighting A Fire, Chas. T Hill (1912)
Boys Book of Firemen, Irving Crump (1916)
Our Firemen, Irving Crump (1938)
Fighting Fire, Burr Leyson (1943)
Five Alarm, John J Floherty, (1949)
Not specifically about FDNY, but interesting and written by Chief of Department (1911-1931) John Kenlon are Fires and Fire Fighters (1913), and Fourteen Years a Sailor (1923) about his pre-FDNY years as a merchant sailor in the 19th Century.