Single sheet published by Bell Aircraft Corp. detailing the Bell 47G Commercial Helicopters. Introduced in 1946 and steadily improved. Printed on one side of the sheet. Shows two photographs, a 14-line description and plan views with dimensions. From the Estate of an aviation engineer. Undated - early, mid-1950s. Tiny pin-holes at each corner. Small residual tape to back panel. Otherwise clean and unmarked.