Sheet J25,K21,M5,N1 Tirrukkovil. Military Series 66. Surveyed in 1900-23. 1st Revision 1936. SDC Reprinted 28.3.42. Reprinted Dehra Dun 1942 (May). Reg.No.39. X.D.D.42'6,200. Grid.
Sheet P5,10,Q1 Yala. Military Series 84. Surveyed in 1902-22. 1st Revision 1936. SDC Reprinted 26.3.42. Reprinted Dehra Dun 1942 (May). Reg.No.44. X.D.D.42–6,200. Grid.