VA , ▁ret iring ▁there ▁as ▁professor ▁emer it us . ▁He ▁was ▁chair ▁of ▁the ▁mathematics ▁department ▁from ▁ 1 9 7 2 ▁to ▁ 1 9 7 5 . ▁ ▁McC rim mon ▁was ▁a ▁Slo an ▁Fellow ▁in ▁ 1 9 6 8 ▁and ▁an ▁Inv ited ▁Spe aker ▁of ▁the ▁International ▁Congress ▁of ▁Mathemat icians ▁in ▁ 1 9 7 4 ▁in ▁V ancouver . ▁He ▁spent ▁several ▁years ▁on ▁s abb at ical ▁in ▁Europe . ▁He ▁was ▁elected ▁a ▁Fellow ▁of ▁the ▁American ▁Mathemat ical ▁Society ▁in ▁ 2 0 1 7 . ▁ ▁Selected ▁publications ▁with ▁Richard ▁D . ▁Sch a fer . ▁" On ▁a ▁class ▁of ▁non comm ut ative ▁Jordan ▁al gebras ." ▁Pro ceed ings ▁of ▁the ▁National ▁Academy ▁of ▁Sciences ▁ 5 6 , ▁no . ▁ 1 ▁( 1 9 6 6 ): ▁ 1 – 4 . ▁ ▁" A ▁general ▁theory ▁of ▁Jordan ▁rings ." ▁Pro ceed ings ▁of ▁the ▁National ▁Academy ▁of ▁Sciences ▁of ▁the ▁United ▁States ▁of ▁America ▁ 5 6 , ▁no . ▁ 4 ▁( 1 9 6 6 ): ▁ 1 0 7 2 – 1 0 7 9 . ▁ ▁" The ▁radical ▁of ▁a ▁Jordan ▁algebra ." ▁Pro ceed ings ▁of ▁the ▁National ▁Academy ▁of ▁Sciences ▁of ▁the ▁United ▁States ▁of ▁America ▁ 6 2 , ▁no . ▁ 3 ▁( 1 9 6 9 ): ▁ 6 7 1 – 6 7 8 . ▁ ▁" The ▁Fre udent hal