Playing croquet. Ah! Mon Beau Château – Gazette du Bon Genre. Pages 170 and 171. 1920. In the public domain due to age. via https://archive.org/details/Gazettedubongen00A/page/170/mode/2up?view=theaterIllustration of 1830s fashions that ran in the Gazette du bon genre Annee 3, no. 5-7. May, 1920. French. Image source archive.org In the public domain due to age. via Vhttps://commons.wikimedia.org/wiki/File:1830_-_Gazette_du_Bon_Genre,_May_1920.jpg“Deux modèles de Jeanne Lanvin”. Illustration from a 1922 issue of La Gazette du Bon Ton, 1922. Image source: ebay. In the public domain due to age via https://commons.wikimedia.org/wiki/File:La_Gazette_du_Bon_Ton_1922_Pierre_Brissaud.jpg
Part of Armorial Hall in the Winter Palace. 1838. French/Russian. Oil on canvas. Collections of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist died over 70 years ago. via https://commons.wikimedia.org/wiki/File:Adolphe_Ladurner_-Part_of_Armorial_Hall_in_the_Winter_Palace(1838).jpgParade on the Palace Square in Saint Petersburg. 1855. French/Russian. Oil on canvas. Signed and dated on the lower left. Collections of the State Historical Museum, Moscow. In the public domain in the United States because the artist died over 70 years ago. via https://commons.wikimedia.org/wiki/File:Adolphe_Ladurner_-Parade_on_the_Palace_Square_in_StPetersburg(1855).jpg Fencing Scene. 1827. French/Russian. Oil on canvas. Image source Roy Miles Fine Paintings. In the public domain due to age. via https://www.art-prints-on-demand.com/a/ladurner-adolf/a-fencing-scene.html
Interiør fra Eremitagen. 1917. Danish. Oil on canvas. Signed and dated 1917 Christian Tilemann-Petersen on the bottom left. Image source: bruun-rasmussen.dk. In the public domain in the United States because the artist died over 80 years ago. via https://commons.wikimedia.org/wiki/File:Christian_Tilemann-Petersen_-Interi%C3%B8r_fra_Eremitagen-_1917.png
Interiør fra Rosenborg Slot. 1921. Danish. Oil on canvas. Signed and dated Christian Tilemann-Petersen 1921 on the lower left. Image source; bruun-rasmussen.dk. Artwork itself in the public domain in the United States because the artist has been dead over 80 years. via https://commons.wikimedia.org/wiki/File:Christian_Tilemann-Petersen_-Interi%C3%B8r_fra_Rosenborg_Slot-_1921.png
Many thanks to Jonathan Bohman, @BohmanArt on Twitter, who saw my post of yesterday and told me about the first image and the artist. Only finding the two prints, the other being in the British Museum.