I’ve only just discovered the Packard Foundation’s online collection of Persian texts in English. There’s quite a large number of classic Persian texts in English translation. The translations are older—just public-domain stuff—so they’ll be a little more difficult to modern ears. There are lots of translations of Persian historical documents, like the Memoirs of Humayun, the Baburnama, and the Akbarnama—you’ll appreciate your next trip to Delhi much more for having read them. There are also classics of Persian literature, like the Shahnama, the Rubaiyat of Omar Khayyam, the story of Laili and Majnun, the Diwan of Hafiz (in several translations), and many others.