I found this classic General Motors motorcoach photograph at My Link page Northern California Bus Fans, wich is located to the right of Your computer screen at http://www.norcalbusfans.com/

This photograph, was located in the section entitled Michigan.

Seen here is a General Motors motorcoach from the Cardinal  Coach Lines Company, that was photographed quiete possibly at the Detroit Michigan airport in October of 1975.

No photographers name is mentioned for this photograph.