To illustrate: a Flying Merkel powered by an 884 cm3 twin, model 1910.

Photo credits: courtesy of Bonhams
The Flying Merkel brand
In short
Years of production
We do not yet have a motorcycle specifications for this brand. But the site
moto -collection
will probably have information that fits your needs.
Location
The history of the brand
Other brands
Here are other brands from
Etats-Unis, and having made motorcycles during the same period as Flying Merkel