I have found the most amazing book fully in digital format available on line. I am talking about Henri Grégoire's Recueil des inscriptions grecques-chrétiennes d'Asie mineure. I was looking for what I believe is a Marcionite inscription in Laodicia. But this is only half the story. Apparently there is a competitor to Google Books called HathiTrust:
Stephan Huller has had a life long interest in religion and spirituality 
dating back to conversations with his grandfather, Gaston Frank. "He said we represent one of the last descendants of the Frankist Jewish faith in the world," he muses. "I grew up thinking that our family was something like the Last of the Mohicans."