 Barker officiated the service; also in attendance were Pittsburgh philanthropist Elsie Hillman, former "Good Morning America" host David Hartman, "The Very Hungry Caterpillar" author Eric Carle and "Arthur" creator Marc Brown.Businesswoman and philanthropist Teresa Heinz, PBS President Pat Mitchell, and executive director of The Pittsburgh Project Saleem Ghubril gave remarks.Jeff Erlanger, who at the age of 10 appeared on "Mister Rogers' Neighborhood" in 1981 to explain his electric wheelchair, also spoke.