Amazing image resource at NYPL Digital Gallery (Here searching on Sweden).
NYPL Digital Gallery provides access to over 275,000 images digitized from primary sources and printed rarities in the collections of The New York Public Library, including illuminated manuscripts, historical maps, vintage posters, rare prints and photographs, illustrated books, printed ephemera, and more.
Please be aware of their copyright.
However, as the physical rights holder of this material most of which is in the public domain for copyright purposes, the Library charges a usage fee if images are to be used in any nonprofit or commercial publication, broadcast, web site, exhibition, promotional material, etc. The usage fee is not a copyright fee. You are free to obtain a copy of these images from a source other than NYPL. Usage fees help ensure that the Library is able to continue to acquire, preserve and provide access to the accumulated knowledge of the world.