If you were born on Thursday, April 08, 1943 then Just My Imagination (Running Away With Me) by The Temptations was the number one on your 28th birthday, and went to number one on March 28, 1971. Check the price of Just My Imagination (Running Away With Me) by The Temptations on Amazon.com
The biggest selling book of 1971 (the year you turned 28) was Wheels by Arthur Hailey.