In 2010, the Oklahoma City Repertory Theatre honored Osterhaus for his contributions as theater director, dance instructor, acting teacher and mentor to hundreds of students. Many of his former students offered tributes and performances in his honor.
“Carveth taught us honesty,” said former student Cyndi Steele-Harrod. “If you are honest with the audience, they will take the ride with you. He would say, ‘Don't underestimate an audience and don't treat them like you are smarter than they are.'
“He said that rehearsal was the work and show time was the fun. It was never Carveth's goal to be a mentor to everybody, and that humble existence is what made him so great.”
Osterhaus is survived by his wife, Kay Creed Osterhaus, brother Cary Osterhaus and sister-in-law Linda, daughter Megan and son-in-law Christopher Bolan, and nephew Neal Osterhaus.