[1] Bukidnon was first created as a subprovince of Agusan in 1907 from the territory of the Buquidnones that was previously unorganized spanning the Spanish politico-military districts of Misamis and Cotabato.
[2] It was admitted as a special province in 1914 under the direct control and jurisdiction of the Department of Mindanao and Sulu whose representatives to the national legislature were appointed by the Governor General as one at-large district beginning with the 4th Philippine Legislature in 1916.
[3] Following the passage of the Tydings–McDuffie Act in 1934, a delegate from the province was elected for the first time to the Philippine constitutional convention held in the same year.
[4] The province then began to send a representative to the Commonwealth National Assembly the following year from its single-member at-large district created under the 1935 constitution.
The district was last contested at the 1984 Philippine parliamentary election and was eliminated following the 1987 apportionment under a new constitution.