Mason, Lowell. Occasional Psalm and Hymn Tunes, Selected and Original: Designed as Supplementary to the several Collections of Church Music in Common Use; Nos. 1 and 2. Melvin Lord, 1836.
Oblong, 10 x 6 inches, black leather spine, marbled paper over paper boards, "Psalm and Hymn Tunes" in black block letters on thin strip of paper pasted to front cover. Numbers 1 and 2 with separate title pages but continuous pagination. 64 pp., foxing. Tunes in four parts with round notes. Good. Hardcover. 
Not as common as the numerous other tune books by Mason.
Lowell Mason (1792-1872), Massachusetts-born hymn composer, music publisher, one of the founders of public school music education in the United States. He is credited with composing over 1600 hymn tunes.
"To him we owe some of our best ideas in religious church music, elementary musical education, music in schools, the popularization of classical chorus singing, and the art of teaching music upon the Inductive or Pestalozzian plan. More than that, we owe him no small share of respect which the profession of music enjoys at the present time as contrasted with the contempt in which it was held a century or more ago. In fact, the entire art of music, as now understood and practiced in America, had derived advantage from the work of this great man." - Hall, Biographies of Gospel Song and Hymn Writers (1914).