Georeferenced and cropped historic "63k Maps of Burma" (mostly edition 1 or 2 / pre-1910)

Georeferenced (to WGS1984) and cropped set of 348 historic maps of Burma at a scale of 1 inch per mile (63,360). Those topographic maps, originally produced and published by the Great Trigonometrical Survey of India between 1887 and 1915, have been scanned and shared with the public as part of the "Old Survey Of India Maps” Community under a CC BY 4.0 International Licence. Most mapsheets are early editions (edition 1 or edition 2) and double-sized (0.5 degree east-west and 0.25 degree north-south extent). Many areas/grid cells are covered by more then one map sheed edition. Each of the 348 map sheet scans was georeferenced using the Latitude-Longitude corner coordinates in Everest 1830 projection. Some mapsheets required a longitude shift of 2'27" to correct for inaccurate coordinates of Madras / refernece point used by the Survey of India. All map sheets were cropped, keeping only the map area - to allow a seamless mosaic without the mapframe overlapping adjacent map sheets when several map sheets are put together in a GIS. Those cropped map sheets were projected from Everest 1830 to WGS1984 (EPSG4326) - standard GPS - projection to make them easier to use and combine with other GIS data. Those map sheets can be loaded directly in any GIS such as QGIS or ESRI ArcGIS as well as Google Earth. The mmHistoricOItopomaps_OxU folder contains the cropped end georeferenced map sheets in jpg-format as well as accompagning georeference and metadata incl. The mmHistoricOItopomaps_OxU_kml contains kml link files to easily load the mapsheets into Google Earth The mmHistoricOItopomaps_OxU.gdb contains an ESRI mosaic dataset to easily load all mapsheets into ArcGIS The mmHistoricOItopomaps_OxU_scanMaps folder contains the uncropped original map scans (renamed though) in jpg-format. The OItopoHistOxU_v20260218.xlsx is a masterlist cataloguing all map sheets for easier use and matching them with the original source files as shared as part of the "Old Survey Of India Maps" (e.g. to identify new mapsheets should new maps be released) All georeferenced map scans are based on maps shared via Zenodo https://zenodo.org/records/18165194 (Old Survey of India Maps" Collection) The file naming convention is to first give the number of the 4 degree x 4 degree block followed by the letter (A to P) of the sixteen 1 degree x 1 degree blocks in each 4 degree block eg. 38 D, and this is followed by a number from 1 to 16 to indicate the number of the map in the 1 degree block. This Number Letter Number designation is followed by the map series type OILatLon (One Inch scale maps with Lat-Lon grid), followed by the edition and year of the edition, followed by the date of publication/print (if known). If the information is not available an "X" (for edition) or "0000" (for an unknown year) is used. A best-guess approach was used if the edition and print year and version information was ambiguous. This is followed by fb-no or fb-yes where fb stands for "Forest Reserve Boundary" which some sheets have printed as green lines on them. This information might be interesting to some. The files as shared via the "Old Survey Of India Maps" have been renamed to standardize the file naming, sometimes correcting them and to make them unique in the case several editions of the same map sheet were available.