Wikipedia, internet, YouTube mass of information
Do you want to find reviews of some of Jussi's concerts or opera performances? That is simply done by using Google (www.google.com) and keying in the appropriate words. For instance, google "Bjoerling San Francisco Opera," and you can find that he made his debut with that company in 1940 in La Boheme and Un Ballo in Maschera
"Jussi Bjorling on the Internet,"
Journal of the Jussi Björling Societies of the USA & UK: Vol. 17
, Article 11.
Available at: https://scholarsarchive.byu.edu/jussibjorlingsociety/vol17/iss1/11