The library of Columbia University, New York City
"Alfred Mainzer, 118 East 28 th St., New York City" "Genuine Curteich-Chicago 'C. T. Art-Colortone' post card reg. U.S. Pat. Off."--printed on verso. Chicago, Ill.
http://digitalcollections.nypl.org/items/c30ac380-c55c-012f-ef4a-58d385a7bc34
#ColumbiaUniversity #NewYorkCity #AlfredMainzer #USPat #Chicago #ColumbiaUniversitys #America #SA-H147 #NewYork(State)

The library of Columbia University, New York City
"Alfred Mainzer, 118 East 28 th St., New York City" "Genuine Curteich-Chicago 'C. T. Art-Colortone' post card reg. U.S. Pat. Off."--printed on verso. Chicago, Ill.
http://digitalcollections.nypl.org/items/c30ac380-c55c-012f-ef4a-58d385a7bc34
#ColumbiaUniversity #NewYorkCity #AlfredMainzer #USPat #Chicago #NEWYORKCITY #NewYork(State)