Thailand. 1902. Siam postal stationery letter card 4 att blue written from 'Camp Hathseo' dated '29th March 02' cancelled on reverse by 'Uttaradi' vernacular date stamp routed via Bangkok with Bangkok / 1 transit on face addressed to England with Camberwell receiver 'May 28' on reverse.
Could "Hathseo" be Elephant Camp !