Thousands of postcards from the Raj, in high resolution and professionally restored available for free (CC BY-SA Creative Commons licensed) at Wikimedia and the Internet Archive.
They will start appearing here in the summer of 2018, organized by place, subject, theme, maker type. Easy to find, easy to use.
Note that titles and spelling are all original to the postcards. If the title is in brackets [ ] it is because there is no printed title, a new one has been assigned. Titles in quotes " " are handwritten titles on the original, from an owner or sender.