A photo from inside the The Pousette-Dart Band tour bus (also known as PDB) circa 1973.

"PDB was an American soft rock group active in the 1970s and early 1980s. Originally conceived in 1973 as a string band from Cambridge, Massachusetts, PDB comprised Jon Pousette-Dart, John Troy and John Curtis."

Text Source: http://en.wikipedia.org/wiki/Pousette-Dart_Band