I think I got it right this time, not off the top of my head though
Here it goes although I don't know if they actually used the word 'Motorcycle' in their catalog.
If they didn't, I loose but this is for sure the first American Production Motorcycle.
I also found that Harley Davidson produced their first Motorcycle Catalog in 1906, so I assumed it wasn't the right answer
'Although a gentleman named Pennington built some machines around 1895 (it's uncertain whether any of them actually ran), the first US production motorcycle was the Orient-Aster, built by the Metz Company in Waltham, Massachusetts in 1898. It used an Aster engine that was a French-built copy of the DeDion-Buton, and predated Indian (1901) by three years, and Harley-Davidson (1902) by four.'
First American production motorcycle - 1898 Orient-Aster