[2] Before joining the family business, Knut Emil Engwall, lived in the United States and Mexico.

[3] In the United States he initially lived with his uncle John Engwall, who had been received in the highest ranks of Free Masonry, and was a Noble of the Mystic Shrine.

[4] John Engwall was the President of the National Publishing Company, the oldest subscription publication in the United States.

From 1883 to 1887, Knut Emil Engwall was chairman of the student body at KTH Royal Institute of Technology.

In 1888, Knut Emil Engwall returned to the United States and was appointed as a board member of Thomson-Houston Electric Company.

[7] Knut Emil Engwall served as the chairman of the lightning board and played a crucial role in the development of the regional electricity plant.

[8] He was an unspecified executive at Hanseong Jeongi Hoesa (Seoul Electric Company), and became acquainted with Gojong of Korea.

He retained a close relationship with Horace Newton Allen, a U.S. Legation official, who later became United States Minister to Korea and Consul General.

[10] In 1905, Emil Engwall uttered support for Allan, who was recalled due to disagreements over the Taft-Katsura Agreement.

[11] Knut Emil Engwall was active in AB Gävle-Dala Järnväg, a project initially funded by his family.

[16] In 1899, Emil Engwall, assisted his brother to be nominated as vice-chairman of Gefleborgs Enskilda Bank for the project to receive additional funding.

[21] In 1904, Knut Emil Engwall initiated the construction of Imperial Russia's first skyscraper, the Cedergren Tower.

[22] In the sphere of telecommunications, Knut Emil Engwall befriended Ivar Kreuger, "the match king".