Not likely valuable enough for your retirement.
Looks like a CAM-29 cover from Lafayette, LA. Covers range from $2.25 to $3.75 (retail). Is there any marking on the back as to whether this was a westbound or eastbound flight? For more info., scan down 2/3rds of the way on this web site for detail on the plane, pilot, cover ID, etc.:
http://www.aerodacious.com/ccCAM029.HTM