NDB approach runway 13 (October 1960) - Airfield in the vicinity: St. Eval (Source: DoD)
In the 1990s
RAF St. Mawgan on a map of the US Department of Defense from 1993 (Source: ONC E-2 (1993), Perry-Castañeda Library Map Collection, University of Texas at Austin)
Source for all maps, if not marked otherwise: US Department of Defense (US DoD)