Day's Jewelers opened at 489 Congress Street in 1927. Their business expanded from selling and repairing jewelry and timepieces to include radios, stereos, television sets, appliances, and cameras.

In 1949, Day's renovated the 489 Congress Street building at the cost of $500,000. The bones of the Morton Block still exist underneath the façade created by the Day's construction.

Maine Historical Society purchased the former Day's Jewelry building at 489 Congress Street in the 1990s and renovated the space into the museum galleries and administrative offices.