Lloyd, W. F. The Teacher's Manual; or, Hints to a Teacher on being Appointed to the Charge of a Sunday School Class; Revised by the Committee of Publication. Philadelphia: American Sunday-School Union, c.1860. 
Terra cotta cloth spine with white titles & decoration, marbled paper boards, 33/4 x 5 3/4 inches, small chip top of backstrip (1/4 of an inch). 108 clean pp., tight, light foxing to end papers, front paste-down with number in purple ink. Good. Hardcover.
The ASSU imprint was this Chestnut St. address from 1857 to 1867. This book was no. 58 in their Cheap Library series.
Serious and practical instruction from the days when teaching a Sunday School class was a grave responsibility.
William Freeman Lloyd (1791-1853), English educator; “In 1810 he was appointed one of the Secretaries of the Sunday School Union. He also became connected with the Religious Tract Society in 1816. Miller (to whom we are indebted for these details) says in his Singers and Songs of the Church, 1869, p. 418: — ‘He commenced the Sunday School Teacher's Magazine, conducted for years the Child's Companion and the Weekly Visitor, and suggested the preparation of a large number of books for children and adults. His own literary productions were various, including several useful books for Sunday School teachers and scholars, and numerous tracts. He was also much engaged in compilation and revision.’” – hymnary dot org.