Frederick A. Muhlenberg, FAIA, was noted for his endeavors not only in architecture but also in community and social services, politics, and the military. He graduated from Gettysburg College in 1908 and from the University of Pennsylvania in 1912 with a Bachelor of Science degree in Architecture. He later obtained an M.S. from Gettysburg in 1913 and was awarded an honorary Doctor of Science degree from Muhlenberg College in 1942.

After an apprenticeship served mainly in the Philadelphia office of John T. Windrim, Architect and after serving as a captain in the 314th Infantry during World War I (incidently with great distinction and was awarded the decorations to prove it) he started an architectural practice in Reading in 1920 that has continued through several reorganizations to its present form as Muhlenberg/Greene Architects, Ltd.

During his years of practice, Fred Muhlenberg was involved in many organizations beyond just those related to his profession. He served as a Colonel with the Army Corps of Engineers during World War II, and was a councilman for both the City of Reading and the Borough of Wernersville where he lived in his later years. He served as chairman for numerous civic and professional organizations including the Association of Schuylkill River Municipalities, the Red Cross Disaster Relief Commission, the State Board of Examiners of Architects, the State Art Commission and, most notably, the Berks County Planning Commission where he served as Chairman from its inception in 1950 until 1972 when he retired from the Commission. In addition, he became the seventh member of his family to be elected to the U. S. Congress, where he served in the House of Representatives from 1946-48.

Retiring officially from the Firm in 1977, one week after his 90th birthday, he continued to appear at the office daily until physical limitations prevented him from doing so about a year later. He died at 92 years of age on January 19, 1980.