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I was a regular to the library in the 90s, first visiting it in 1990 and visited it as recently as 2004 or 2005. Its a pretty big library -and had a great collection of military books related to india. Their storage room has tons of old rare books - including Gazettes of India dating from the 19th Century.
The building is one of the 137 such designated as "Heritage Buildings" by the Government of Andhra Pradesh.
I tried locating a contemporary photograph of this building but was not able to locate one - Strange in the age of Digital Photography and Internet Photo uploads.