Johann Heinrich Roos on Wikipedia
External resources
- http://books.google.co.uk/books?id=RL4f-CcKmcwC&printsec=frontcover&dq=roy+bolton+old+masters&hl=en&ei=FEjES6HoJN6XOO-KnNkP&sa=X&oi=book_result&ct=book-thumbnail&resnum=1&ved=0CD0Q6wEwAA#v=onepage&q=roos&f=false
- http://search.famsf.org:8080/search.shtml?keywords=johann%20roos
- http://www.artcyclopedia.com/artists/roos_johan_heinrich.html
- http://www.dia.org/search.aspx?search=johann+roos
- http://www.dulwichpicturegallery.org.uk/search_results.aspx?Terms=johann%20roos
- http://www.encyclopedia.com/doc/1E1-Roos-Joh.html
- http://www.scholarsresource.com/browse/search?text=roos&x=12&y=17