Spain 1:50,000.
United States.Army Map Service.
Instituto Geográfico y Estadístico (Spain)
Washington,
1943-
Set includes various issues of some sheets.
"The longitude ... is based on the meridian of Madrid which is 3°41'14.55" west of Greenwich."
"Contour interval 20 meters."
Military grid.
Six classes of roads and tracks, four classes of railroads, three types of internal boundaries, and orchard, vineyard and woodland areas are shown.
Based on maps by Spanish Instituto Geográfico y Estadistico. Some sheets are reprinted from British General Staff Geographical Section (GSGS 4144).
Marginal diagram: Index to adjoining sheets.
Incomplete.
Graphic index (shared with GSGS 4144) in central GSGS file.