Carles (Carlos) Vallhonrat, former lecturer and chairman of the department of architecture at the University of Pennsylvania, died at home in Haverford on February 21. He was 89.

Mr. Vallhonrat was born in Barcelona, Spain and graduated from the Universidad Nacional del Litoral in Rosario, Argentina. He then earned a master’s degree in architecture from Penn.

From 1960-1971, Mr. Vallhonrat worked in the office of Louis I. Kahn as principal assistant to Mr. Kahn, where he contributed to the design of the Salk Institute, the Bangladesh Capital Complex and the Palazzo dei Congressi in Venice. As senior designer and consultant to Ewing Cole Erdman & Eubank, he designed the Federal Reserve Bank in Philadelphia.

Mr. Vallhonrat joined Penn in 1963 as a lecturer. In 1965, he succeeded G. Holmes Perkins as chairman of the department of architecture. 

He spent the majority of his teaching career in the School of Architecture at Princeton, where he began in 1972. He also taught at Yale University, Tel Aviv University and others

Mr. Vallhonrat was founder and president of the original Louis I. Kahn Archive from 1974-1978, having acquired the records and drawings  of Kahn, which have resided at Penn ever since. 

In addition, he was principal of C.A. Vallhonrat, Architect, his private practice in Philadelphia.

He is survived by his wife, Leslie; his children, Christopher, Gregory, Heather Garrett and Seth; and his grandchildren, Elizabeth, Alice, Carolyn, Charlotte and George.

Gifts in memory of Professor Carles Vallhonrat can be made to the Princeton University Professor Vallhonrat Fund (Princeton University, Alumni and Donor Records, Helen Hardy, P.O. Box 5357, Princeton, NJ 08543-5357).