After four years as a solo practitioner, Johnson invited Alan Ritchie to join him as a partner. Ritchie had been a partner for many years in the Johnson-Burgee office and was the partner-in-charge of the AT&T building and the 190 South Lasalle Street office building. In 1994 they formed the new practice of Philip Johnson>Alan Ritchie Architects. During the next ten years they worked closely together and yet again explored new directions in architecture, designing buildings as sculptural objects. Some of the buildings that expressed this were the Chapel of St. Basil at the university of St. Thomas, the Cathedral of Hope in Dallas, the Habitable Sculpture (a 26-story apartment tower in lower Manhattan), The Children Museum in Guadalajara, Mexico, The Chrysler Center and DDC Showroom in NY. One of his last designs with Alan Ritchie, completed after his death, was the Urban Glass House, a condominium building in lower Manhattan which was an urban expression from his own earlier work, his famous Glass House residence. The final building he designed with Richie was the Pennsylvania Academy of Music building in Lancaster, Pennsylvania, which was completed in 2008. Alan Ritchie now continues the Johnson legacy and design excellence and continues to explore the many ideas they developed together.

He was a pillar for club and country during the late 1960s and through the 1970s. He made his league debut in 1963 and spent 15 inspiring seasons with Aliyat Al-Shurta and with merger club Al-Shurta, where he was a key figure in the side along with Abid Kadhim, Majeed Ali, Latif Shandal and Riyadh Nouri. He became the first outfield player in the Iraqi League to play as a goalkeeper when he was forced to go in goal for the final few minutes of a 5-2 win over Al-Tijara after an injury to Raad Hammoudi. After making his international debut in 1967, Douglas quickly became a key influence as the midfield general in the heart of the Iraqi team.