He has made numerous presentations of his photography , and he has a star on the St. Louis Walk of Fame .
Although he retired from teaching full - time in 1999 , Gass remains professor emeritus at Washington University .
Gass has made numerous presentations of Gass ' photography , and he has a star on the St. Louis Walk of Fame .
Although he retired from teaching full - time in 1999 , Gass remains professor emeritus at Washington University .