Off the top of my head: Ross was but no longer is (I believe) a made in US marque.
During the 70s and into the 80s they were mostly dep't store or low price LBS quality bikes (I can remember seeing them in both locations). However, for awhile in the 80s they put out a good quality cro-moly frameset with Shimano 600 components. Solid but unspectacular. They probably would weigh 23-25lb which was about standard for good quality roadies back then.
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“Life is not one damned thing after another. Life is one damned thing over and over.”
Edna St. Vincent Millay