M_Boats: M-12 new owner needs jib & Main specs and source to buy

I purchased an M-12 but it is missing the jib. There is a brass plate on the transom with a date 12-69. The boat is in very good shape and was used in our clubs youth program. Need some help: 1. Specs for jib and main 2. A source to purchase new sails for this boat Thanks, Terry Preston