There is not much published material on postcards from India during the Raj; here are the bits and pieces, many of them recent.
Sue Smallwood, To Dear Harry Boy (Postcards from India 1907-1911), Impress, London, 2017.
"A dazzling pictorial journey across colonial India from an unusual perspective, To Dear Harry Boy records the impressions of a British cable joiner as he works his way around the subcontinent, through a series of postcards addressed to his young son."
Emily Stevenson and Stephen Putnam Hughes, From Madras to Bangalore, Frontline, Sept. 14, 2018.
"A careful examination of picture postcards of Madras and Bangalore of the early 20th century shows that this medium tells us a complex story of colonial urbanism and the history of photography that sheds a new light on these two cities."
A Postcardist interview with Stephen Putnam Hughes, Co-Curator of the groundbreaking From Madras to Bangalore exhibit at SOAS in London about postcards in the two colonial cities, Sept. 6, 2018.
"The world was a much more connected place at the beginning of the 20th century than we think of it."
Sujaan Mukherjee, The story of the elusive man who made these fascinating pastel postcards of Calcutta, Scroll.in, March 2, 2017
"Indians and Europeans share equal space on Frank Clinger Scallan’s vibrant canvases without indication of social hierarchy."
Chasing Chinthes, The Sharman Minus collection of early postcards of Burma, or Myanmar.
"Exploring a family's hidden past in Burma, on this page are some of my vintage postcards of Burma, mostly from 1900-1939."