David Klöcker Ehrenstrahl, his studio

Bukowskis International Spring Auction no 472, 1990, catalogue no 20.

Axel Sjöblom, "David Klöcker Ehrenstrahl", 1947, at p.. 59-64 is a description of the paintings of the royal family during the 1690s for (among other) Drottningholm Palace.
Bertil Rapp, "Djur och stilleben i karolinskt måleri", 1951, compare the dogportraits catalogue no 82, 83 and 90.
Ed. Göran Alm, "Barockens konst", Signum 1997, Ehrenstrahl as the court painter described at p. 405-407.
Ed. Göran Alm and Rebecka Millhagen, " Drottningholm slott - Från Hedvig Eleonora till Lovisa Ulrika", 2004, Volume I, compare painting full page at p. 252 (same motif dated 1692, in the Nationamuseums collection, NMGrh 225).).
Lisa Skogh, "Material Worlds, Queen Hedvig Eleonora as collector and patron of the arts", 2013, Academic thesis, compare painting at p. 141, catalogue no 89 (same motif dated 1693, in the Eutiner Schloss collection in Germany).