Isak Gustaf Clason (30 July 1856 Falun – 19 July 1930 Rättvik) was a Swedish architect. Biography. Clason studied engineering and later architecture at the Royal Institute of Technology in Stockholm, where he was a student of Albert Theodor Gellerstedt (1836-1914), and later at the architectural school of the Royal Swedish Academy of Arts, at the time headed by Fredrik Wilhelm Scholander (1816-1881). He received the royal medal in 1881 and studied abroad 1883-1886.
https://en.wikipedia.org/wiki/Isak_Gustaf_Clason