first commission for a synagogue, 'Not by Might, Nor by Power, but by my spirit, saith the Lord of Hosts' for the facade of West Suburban Temple Har Zion in River Forest, Illinois, with architects Loebl Schlossman & Bennett. The stone relief depicts the divine presence, the many-eyed Shekhinah, in human form. 1951 'Job' included in the first, and last, juried national show of American sculpture at the Metropolitan Museum of Art. 1953–54 Sculpted Torah ark doors for South Shore Temple in Chicago. The wooden panels are life-size depictions of two cherubim. Completed the three bronzes "The Teacher, the Mother, the Father" for the PTA headquarters in Chicago 1953–55 Received his first commission from City of Chicago, "Chicago Rising from the Lake" for the Department of Public Works. Installed high on the facade of a parking garage, the piece is now located at ground level on the Columbus Ave. bridge and the Chicago River Walk. 1954–56 Worked on "History of Medicine", four monumental relief pylons, at the West Virginia University Medical Center in Morgantown, West Virginia. 1957 Awarded Citation of Honor by the American Institute of Architects Centennial Conference, Washington, DC. 1957 "Ark-Reredos" in Silling Chapel at the West Virginia University Medical Center (Reredos): wall behind the altar, serving also as the Torah ark. Representatives of the participating faiths agreed on the shared symbolism and architecture of the Ark-Reredos. 1958 Completed bronze relief (depicting a variety of philanthropy-supported activities, such as (from left to right) child care, physical fitness, religious study, scientific research, and care for the ill) for a facade of the Jewish Federation of Metropolitan Chicago. The piece is prominently displayed indoors at 30 S. Wells, the new Jewish Federation headquarters, as of 2007. 1963–65 Worked on the monumental "Hymn to Water" for the Central Water Filtration Plant of the City of Chicago. In this, the largest of his works, the artist used poetic symbols to celebrate water as the sustaining force of life. 1963–69 Created a bronze relief "Jacob's Struggle" (1963, cast 1969), in which "Horn depicts Jacob wrestling with the Angel of God. Caught in a swirl of robes and angel wings, the two figures are locked in an embrace of struggle and love". In 1997, after Horn's death, the relief was donated to St. Thomas the Apostle Catholic Church in Hyde Park. 1971 Created the "Physician" series of 4 medieval medical relief-carved medallions in gold