Newbury Street. It's summer and the big money has gone out of town so galleries grow kind to the Cinderellas of their collections and show American art. This year bicentennial tourism may aid Boston artists who are being shown at this least profitable time of year. In any case it's providing a patriotic theme for many of the gallery shows. Rolly-Michaux and Vose are showing American impressionists. Nasrudin, Neilsen, Shore and newly opened Sunne Savage are displaying contemporary Boston artists.

The other themes for gallery summer shows is "From Our Collection." These shows are interesting because they reveal a gallery's basic activities. They're showing the artists that are affiliated with them Newbury Street galleries look like copies of posh uptown New York galleries Harcus Krakow Rosen Sonnaband actually imports what the others aspire to imitate-they're the Boston representatives of Motherwell, Frankenthaler and others whose paintings they're exhibiting now Graphics 1 and 2 is showing equally famous contemporary graphics.