Dear Colleagues, I am deeply saddened to inform that Prof. Bob Squires (b. 1935) passed away peacefully yesterday evening. Bob received his BChE degree from RPI (1957), and MSE (1958), MS Math (1960) and PhD (1963) degrees from the University of Michigan, under the direction of the well-known catalysis scientist Prof. G. Parravano. He joined our School's faculty in 1962, developed and maintained an active and visible research program in catalysis, and reached Emeritus status in December 2004. He coordinated the School's co-op program from 1982 until his retirement. Bob was a legendary teacher and received our School's Shreve Prize for outstanding undergraduate teaching six times, the College's Potter award twice, and the University highest teaching award in 1981 (then Amoco Outstanding Teaching Award, now the Murphy Award). Nationally, for his outstanding teaching, Bob received the ASEE Western Electric Award in 1977 and the CMA's Catalyst Award in 1985. Bob and his wife Carol cared deeply for students and invited them regularly to their home for informal evening conversation and snacks. Over the years, I have spoken to many of his former students who recall these visits vividly and fondly - they made a lasting impression. I feel very fortunate that I visited Bob and Carol at their home about 5 weeks ago, and wrote to you about his health then. The funeral arrangements are pending and I will inform you when they are known. Bob will be sorely missed by family members, and countless admiring students, staff, and faculty colleagues. Arvind Arvind Varma R. Games Slayter Distinguished Professor Head, School of Chemical Engineering Purdue University