Cushman, E. A New Collection of Hymns, for Conference Meetings, and for Private Devotion; Selected from the most approved Authors. Hartford: Printed and Published by Roberts & Burr, 1821. Second Edition, Revised and improved from the first Edition, By the Rev. E. Cushman. 
Full calf, several creases to the binding including one in the middle of the spine, 5 1/4 x 2 3/4 inches. "Bena Baldwin's Property, Branford" in brown ink on ffep. 222 pp., collated and complete. Some wear to the margins from use; no damage to the text. Good. Full calf.
Some sermons by Rev. Cushman are in Starr's Baptist Bibliography, but not this hymnal. Not in Music & Richardson.
Several hymns on baptism show that the compiler believed in immersion, and in believers-only baptism.
Rev. Cushman may be only the reviser and not the compiler. There is no preface or introduction and so no additional information is available from the hymnal itself. The original copyright was given to B. & J. Russell of Hartford, CT, in 1817. We find a record of it being published by them in that same year.
Elisha Cushman (1788-1838), b. Kingston, Maine; d. Hartford, Connecticut. A "lineal descendant of Robert Cushman, one of the Pilgrim Fathers. Was converted in this twentieth year and shortly thereafter was licensed to the Christian ministry by the Kingston Baptist Church. Pastor of the Hartford, Connecticut, Baptist Church until 1825. Was the first editor of The Christian Secretary, starting in 1822. Later served as pastor of New Market Street Baptist Church, Philadelphia, 1825-1829; Stratford Baptist Church, Fairfield, Connecticut, 1829-1831; and First Baptist Church, New Haven, 1831-1835." - Roper, Dictionary of North American Hymnology online.