D. Alan Stevenson

David Alan Stevenson FRSE, F.I.C.E., FRSGS (7 February 1891 – 22 December 1971) was a lighthouse engineer from the famous Stevenson lighthouse-builder family and noted amateur philatelist. In 1951, Stevenson was awarded the Crawford Medal by the Royal Philatelic Society London for his work The Triangular Stamps of Cape of Good Hope.

D. Alan Stevenson

David Alan Stevenson FRSE, F.I.C.E., FRSGS (7 February 1891 – 22 December 1971) was a lighthouse engineer from the famous Stevenson lighthouse-builder family and noted amateur philatelist. In 1951, Stevenson was awarded the Crawford Medal by the Royal Philatelic Society London for his work The Triangular Stamps of Cape of Good Hope.