Ace-Kauffman has made its mark on the Mile High City. Founded in 1872 as the Denver Novelty Works Company, it's had various addresses and names through the decades (a new owner in the '40s added the "Ace" to the name of a previous owner in order to appear first in the phone book), but its basic mission is unchanged. Ace-Kauffman sells notary supplies as well as engraved nameplates, rubber and pre-inked stamps, and just about any kind of corporate award you might need. Although these days you can do your ordering online, it's worth a trip to the company headquarters on Welton Street to see what this strip was like before behemoth apartment buildings started replacing the mom-and-pop businesses.