A sustained programme of archival research in archives in Delhi, Agra, UK and Canada revealed much valuable information. This included early 19th century drawings, visitor comments from as early as the early 17th century, an almost continuous record of pictures from 1849 onwards, planting plans of the 1880’s and early 20th century, a detailed record of the significant work done in the garden in the period 1903-11.
An extremely high level of documentation, to internationally accepted standards, has been maintained. This has included a detailed garden survey with each plant marked on a digitized plan also indicating species. Also drawn up is each stone of the channels and pathways individually plotted. Comprehensive measured drawings of the tomb itself have also been prepared. In addition to the drawings, over a 1000 rolls of film, a continuous video documentation of the project has been carried out.