Dear friends, Here is the copy of the letter from the ASI clarifying that there is no need to get prior permission for sketching at ASI sites. (For some reason the link I posted earlier is inaccessible and many were asking about it.) Have a copy printed and keep it handy while sketching at ASI sites. https://drive.google.com/file/d/0B-mURCQ01faIT2RqVnBNMXR0Sjg/view?usp=sharing Regards, --Ganapathy Subramaniam