West Indies — Virgin Islands: St. John – Tortola – Virgin Gorda (Mercator projection, 1:100,000 at Lat. 18°04', soundings in fathoms) — Unattributed commercial publisher, after a mid-20th-century U.S. government hydrographic chart (stock number 'AMR 3153' at lower right) | Appraisal & valuation

Opening the file…