If you were born on Monday, March 02, 1942 then Have You Never Been Mellow by Olivia Newton-John was the number one on your 33rd birthday, and went to number one on March 02, 1975. Check the price of Have You Never Been Mellow by Olivia Newton-John on Amazon.com
The biggest selling book of 1975 (the year you turned 33) was Ragtime by E.L. Doctorow.