The Long Ships
The adventure novel written in Swedish, this book
describes the adventures and travels of a viking in Spain,
Denmark, Sweden, England and Russia. Very well-written and
thoroughly researched. Famous for being the only book written
in Lund to have been mentioned favourably in a student song of
Uppsala.
One of the major poets in Swedish literature, she also wrote
some novels, Kallocain being one of the most well
known, a dystopy that compares favourably with You Brave
New World, Fahrenheit 451 or 1984.
Web pages of interest
While Lindgren's books are children's books, her themes are almost always mature and adult. She is without doubt the the most well-known and widely published Swedish author, and is likely to remain so for the foreseeable future, even though her last book - Ronja the Robber's Daughter - was published over ten years ago. Her production includes the Emil and Pippi Longstocking books, The Brother's Lionheart and Mio my Mio. Many of her books have also been made into movies - but avoid the American renderings.
IMO, she should be given the Nobel Prize in literature.
The Emigrant Cycle
In the 60's and 70's this pair wrote a series of ten mystery novels under the collective title "Novel about a crime", managing to combine an Ed McBain-like style with social awareness and critique. They are widely regarded as some of the best mystery novels ever written, and still scores continued success - nationally and abroad. I can especially recommend The Laughing Policeman, Roseanna and The Abominable Man.
Almost all of their books have been put onto film.
Roseanna is especially good.
Web pages of interest
soc.culture.nordic FAQ contains entries on
authors and literature for all the Scandinavian countries.
Projekt Runeberg is a project dedicated to publishing Nordic literature and art in the public domain in electronic form. While the overwhelming majority of their texts is in Nordic languages, they also have indices over Nordic authors, as well as biographical data, some of which is linked above.