[1] The King in Council appointed von Heidenstam, as it had become desirable—partly due to the development of Swedish-Persian trade relations—to establish direct diplomatic relations with Persia.

[2] The engineer Hugo von Heidenstam was appointed in 1936 as Sweden's first resident minister in Tehran.

[5] In September 1957, an agreement was reached between the Swedish and Iranian governments on the mutual elevation of the respective countries' legations to embassies.

The diplomatic rank was thereafter changed to ambassador instead of envoy extraordinary and minister plenipotentiary.

[6] In August 1960, after an agreement was reached between the Swedish and Afghan governments that the heads of missions in their respective countries would hold the rank of ambassador, Sweden's then-ambassador to Tehran and Baghdad, Dick Hichens-Bergström, was also appointed as ambassador to Kabul.