ISAAC KUBIE & CO.
X8 MAIDEN LANE, N.Y.
From the web I've been able to track Isaac Kubie & Company to the chicle importation business.
The firm appears to have been involved in other import-export activities and was based in the Wall Street district on Maiden Lane. Chicle was once the main base of chewing gum, hence Chiclets.
Isaac's wife is the far more web-documented of the pair, and has her biography posted on several websites.