Popp became a US citizen and started the business "Lothar Popp Import and Export, Manufacturer of Educational Toys Microscopes and Musical Instruments, 446 East Str.
Popp wurde amerikanischer Staatsbürger und eröffnete in New York das Geschäft Lothar Popp Import and Export, Manufacturer of Educational Toys Microscopes and Musical Instruments, 446 East Str.