Elioak, Maryland

[3] The postal community was named after the Elioak plantation built by Owen Dorsey, Judge of the Baltimore Orphans' Court.

[7] Local families such as the Kahler, Miller, and Worthington claimed Elioak as home while they served in World War I.

[9] The road from Elioak to Simpsonville was resurveyed in 1820 as part of Charles Carroll's 13,000 acre Doughoregan Manor, with a stone inscription that read, "There stand the beginning trees of Doughoregan, Push Pin and the Girl's Portion".

[12] The interior of the curving road formed the unofficial western boundary targeted for public water and sewer, as well as the area purchased by land speculators for the Rouse Company development of Columbia.

The exterior forms the rural boundary of Howard County targeted for preservation though easements created by Senator Clark of Elioak Farm in the 1980s.