Schmucker collaborated with A. T. Geissenhainer on A Liturgy for the Use of the Evangelical Lutheran Church. In particular, Schmucker worked to revive historic liturgical practice. His knowledge of details in matters pertaining to the order of service, especially of the Lutheran Church of the sixteenth and seventeenth centuries, was unusually extensive and accurate.[5]
Selected works
The First Pennsylvania Liturgy, Adopted in 1748 (1882)
The Early History of the Tulpehocken Churches (1882)
The Lutheran Church in Pottstown (1882)
The Lutheran Church in Frederick, Maryland (in Quarterly Review, 1883)
The Lutheran Church in the City of New York during the First Century of its History (in Church Review, 1884–85)
The Organization of the Congregation in the Early Lutheran Churches in America (1887)
A Liturgy for the Use of the Evangelical Lutheran Church(1888)
He was co-editor of the Hallesche Nachrichten (Allentown, Pennsylvania, and Halle, Germany, vol. i., 1884; English ed., Reading, Pennsylvania, vol. i., 1882), which is the primary source of information concerning the early history of the Lutheran Church in the United States. Schmucker also edited:
Liturgy of the Ministerium of Pennsylvania (Philadelphia, 1860)
Collection of Hymns of the Ministerium of Pennsylvania (1865)
Church-Book of the General Council (1868)
Ministerial Acts of the General Council (1887).
He published numerous articles on doctrinal, historical, and liturgical subjects, of which many have been republished separately in pamphlet-form.[3]