Small hard cover book with dark green cover. Gives guidelines on how to sing. Titled "Advice to Singers" by Frederick J Crowest. 4th edition with 128 pages, Part of series of Warne's Useful Books."Bromide of Potassium" written in pencil on the first page of book.books, music, instructional book, singing book, frederick j. crowest, warne's useful books, frederick warne and co.