Raja Yoga by Vivekananda
Baghavad Gita translation and explanation by Yogananda
Nature's Finer Forces by Rama Prasad
Magick Liber ABA by Crowley
Paul Foster Case's books on Tarot
Fourteen Lessons in Yogi Philosophy and Oriental Occultism by Yogi Ramacharaka

Plus many more...



and for something a bit more obscure and out there, the work by Nimrod de Rosario, not sure if it's published in English