Digital versions of two books by David Flusser, The Spiritual History of the Dead Sea Sect and Jewish Sources in Early Christianty, are available to be borrowed on the Internet Archive. With a free account you can borrow these digital resources just like you would a print book from your local public library. Click on the icons below to check them out. Enjoy.
Mary: Images of the Mother of Jesus in Jewish and Christian Perspective, to which Flusser contributed an essay is also available: