Basutoland 1:50,000 /
Great Britain.Directorate of Overseas Surveys.
Great Britain.Directorate of Colonial Surveys.
[Tolworth, Surrey] : The Directorate,
1953-
Relief shown by contours and spot heights.
Some maps have title: Basutoland (with part of Republic of South Africa); some have title: Basutoland (with part of Union of South Africa).
Sheets of various eds. Some maps are preliminary plot.
Some maps issued by Directorate of Colonial Surveys as part of series D.C.S. 21.
Grid: East-Africa Belt F.
Includes boundary, magnetic declination and reliability diagrams and index to adjoining sheets.
Graphic index in central file (interfiled with later eds. titled: Lesotho 1:50,000)