Dining room (candelabra detail), mansion of Baron A. L. Stieglitz. ca. 1869. Watercolor. Luigi Premazzi, painter (1814-1891). Image © 1998-2018 The State Hermitage Museum. Fair use license.via https://www.hermitagemuseum.org/wps/portal/hermitage/woa-search/#search=Luigi%2520premazzi&meta_authoring_template=WOA
Dining room (chandelier detail), mansion of Baron A. L. Stieglitz. ca. 1869. Watercolor. Luigi Premazzi, painter (1814-1891). Image © 1998-2018 The State Hermitage Museum. Fair use license.via https://www.hermitagemuseum.org/wps/portal/hermitage/woa-search/#search=Luigi%2520premazzi&meta_authoring_template=WOA
Blue drawing room, mansion of Baron A. L. Stieglitz. 1870. Luigi Premazzi, painter (1814-1891). ). Image © 1998-2018 The State Hermitage Museum. Fair use license.via https://www.hermitagemuseum.org/wps/portal/hermitage/woa-search/#search=Luigi%2520premazzi&meta_authoring_template=WOA
Main staircase, mansion of Baron Stieglitz. 1871. Watercolor. Luigi Premazzi, painter (1814-1891). Collection of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist has been dead over 70 years. Via https://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Premazzi._Mansion_of_Baron_Stieglitz._Main_Staircase_%282%29._1871.jpg/809px-Premazzi._Mansion_of_Baron_Stieglitz._Main_Stairca
White drawing room, mansion of Baron A. L. Stieglitz. 1870. Luigi Premazzi, painter (1814-1891). Image © 1998-2018 The State Hermitage Museum. Fair use license.via https://www.hermitagemuseum.org/wps/portal/hermitage/woa-search/#search=Luigi%2520premazzi&meta_authoring_template=WOA
Supper room, mansion of Baron Stieglitz. 1871. Watercolor. Luigi Premazzi, painter (1814-1891). Collection of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist has been dead over 70 years. Via https://commons.wikimedia.org/wiki/File:Premazzi._Mansion_of_Baron_Stieglitz._The_Supper-room._1871.jpg
Must have been taking a break from painting all those rooms in the Winter Palace. Sets of those watercolors coming, and lots of them. Just found more, mostly from Romanov palaces but some being of the drawing rooms of their friends.