In 1962, Harry Levin (1928-1987) opened his first store in Wilmington, Delaware, simply called "Discount Center".

He quickly gained a reputation for his always-cheerful disposition, and customers soon simply referred to his store as "Happy's".

At the time, Happy Harry's was the largest drugstore chain in Delaware and soon grew to 76 stores.

[citation needed] The announcement of the acquisition was surprising for Walgreens, whose approach differs most notably from its competitors when it comes to growth.

This enabled Happy Harry's customers to have prescriptions refilled and records retrieved at any Walgreens pharmacy nationwide.