Seven ballet programs, NYCB, ABT 1970s

I have just listed on eBay a group of seven programs from the New York 
City Ballet (six) and the American Ballet Theater (1). Six are from the 
'70s, including a 25th NYCB Anniversary Program, and one from 1999, 
which is a 50th NYCB Anniversary program. That makes me feel awfully 
old. Google eBay, then Advanced Search. In the box labelled "Seller" 
type "PrinceMyshkin" (no quotes, no spaces).