I have a good condition, 1979 Buick Shop Manual for sale. Covers all series of '79 Buick, including Riviera. Over 1000 pages, including wiring diagrams. Good covers and binding. Clean interior pages. The price is $30, plus media mail shipping. I'm not set up for PayPal, but I welcome your personal check or a money order. (See my other posting for a 1979 Fisher Body Manual I also have for sale. It is specically for the Riviera.) John