The engine on the front of this post card is an EMD FP7A. The EMD means that it was manufactured by the Electro-Motive Division of General Motors. The FP7A is the model of engine. The FP7A model was designed to be a diesel engine that carried a steam generator as part of the cab. This allowed the engine to pull and heat passenger trains. This model was also an improvement over the previous EMD E-units because the company changed the wheel configuration to give the engine better traction pulling up grades. The engine was rated for 1,500 horsepower.
I have looked on the internet and I can find a picture of the same engine in service. The picture is dated January 1, 1996. The engine was serving the Wyoming Scenic Railroad in that picture. Let’s hope that it has had a long and fruitful life and that someone is still enjoying it today.
I found this information about the publishing company on their website: Founded in 1964 by the late Carl H. Sturner, Audio-Visual Designs has been a leader in providing high quality railroad images products for over 4 decades. The business was originally located in Earlton, NY. The name was derived by the products sold at the time – audio soundtracks of trains well as visual items (post cards, books, & calendars). The first All Pennsy Calendar was published in 1966 and for many years used exclusively the photos of Don Wood, a long time friend of Carl's. In the late 80's, Carl started showcasing other photographer's work as well.