Here are a few Samples to view, so that you can see the quality of the scanned manuals.
1940 - 1963 Buick Master Chassis Parts Book
1940 - 1964 Buick Master Body Parts Book
1963 United Delco Automatic Transmission Manual for Buick Twin Turbine
1956 Buick Air Conditioner Package Field Installation Manual
1956 Buick - Servicing the Buick In-Line Power Steering
1956 Buick - Servicing the new Buick rear axle
1956 Buick Product Service Bulletins
1956 Body By Fisher Service News sample
1956 Buick Maintenance Manual
1956 Buick Moraine Power Brake Service Manual
1956 Buick Color and Fabric Selections