April 6, 1874, Brodheadsville, Pennsylvania.
September 20, 1938, Hoboken, New Jersey.
Buena Vista Cemetery, Brodheadsville, Pennsylvania.
Calvin was the son of Nathan Laufer and Angelina Weiss, and husband of Ellen Florinda Metzger.
Laufer attended Franklin and Marshall College, Lancaster, Pennsylvania (BA 1897, MA 1900), and Union Theological Seminary, New York City (1900).
After ordination as a Presbyterian minister, he pastored at the Steinway Reformed Church, Long Island City, New York (1900–05) and the First Presbyterian Church, Hoboken, New Jersey (1905–15). He then served as a field representative for the Presbyterian Board of Publication and Sunday School Work (1914–24), and the Presbyterian Board of Christian Education (1925–38). He helped edit the Presbyterian Hymnal of 1933 and the Handbook to the Hymnal, 1935. His other works include: