Try Original Auto Interiors for the 1961 seat covers. They advertise in Hemmings. Make sure that the stitching is the proper double stitched "french seam". Also make sure the front seats have ten (10) pleated segments between the bolsters, and the rear seating area has eleven (11) pleated segments between the bolsters. No matter who you deal with, make sure they use the proper carpet color at the lower rear of the front seat cushions. It must match your interior's carpet color.