The living room of Sigurjóns, carpenter, and his wife, Elin, at Vonarstræti 8, Iceland (possibly Reykjavik), between 1910 and 1930, by Magnús Ólafsson, via The Reykjavik Museum of Photography Commons on flickr (both photos).
I believe you can just see Sigurjóns beyond the doorway in one of the images. Elin must be the woman in traditional dress, and the other woman may be their daughter.
I don’t know if this photo was really taken in winter or not, although the tulips on the table could have come from a greenhouse in February.
Winter garden (interior), Nice, French Riviera, between ca. 1890 and ca. 1900, a photochrom by Detroit Publishing Co., via Library of Congress Prints and Photographs Division.
There is another view of this structure here. It was probably connected to one of the city’s grand casinos.
St. Margaret’s Home, Montreal, 1933, via Notman Photographic Archives, McCord Museum Commons on flickr.
At the time of the photo, the house — built in 1845 — was a small hospital run by the Anglican Sisters of St. Margaret. It still exists today and is called Notman House for photographer William Notman who lived there in the late 19th century.
I really covet those plant supports between the windows.
The Christmas Tree of Mrs. A.M. Keen, between 1905 and 1945, probably Washington, D.C., by Harris & Ewing, via Library of Congress Prints and Photographs Division.
You can check out all the little details on an enlarged and enhanced version here, on Shorpy.
Amaryllis, Alberta, Canada, ca. 1930, hand-colored glass lantern slide by William Copeland McCalla, via Provincial Archives of Alberta Commons on flickr (all images here).
The photographer, William McCalla, was interested in botany and photography from an early age. He studied at Cornell University in the early 1890s and later worked in western Canada as a farmer, librarian, and Natural History teacher. While teaching from 1925 to 1938, he made over 1,000 lantern slides of plants and animals as visual aids.
The slides were donated to the Archives by his son and granddaughter in 1982 and 2007.