https://digitaltmuseum.org/011034077639/ostberg-ragnar-1866-1945

http://commons.wikimedia.org/wiki/File:Ragnar_%C3%96stberg_1915.jpg

https://www.google.com/search?q=ragnar+%C3%B6stberg+arquitecto&client=safari&rls=en&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj7-qmg6IThAhVGyYUKHbVdBbQQ_AUIDigB&biw=1030&bih=1204#imgrc=yhjK4NsiwFgagM:

http://www.stockholmskallan.se/Soksida/Post/?nid=711

http://www.stockholmskallan.se/Soksida/Post/?nid=702

https://www.google.com/search?q=ragnar+%C3%B6stberg+arquitecto&client=safari&rls=en&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj7-qmg6IThAhVGyYUKHbVdBbQQ_AUIDigB&biw=1030&bih=1204#imgrc=yhjK4NsiwFgagM:

https://www.google.com/search?q=ragnar+%C3%B6stberg+arquitecto&client=safari&rls=en&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj7-qmg6IThAhVGyYUKHbVdBbQQ_AUIDigB&biw=1030&bih=1204#imgrc=yhjK4NsiwFgagM:

https://www.google.com/search?q=ostberg+ragnar&client=safari&rls=en&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi5kJ3b9Y3hAhXB2OAKHUQzDqkQ_AUIDigB&biw=1694&bih=987#imgrc=sc-HVU2o0FyqbM:

https://www.google.com/search?q=ostberg+ragnar&client=safari&rls=en&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi5kJ3b9Y3hAhXB2OAKHUQzDqkQ_AUIDigB&biw=1694&bih=987#imgrc=sc-HVU2o0FyqbM: