Pseudepigrapha and Apocrypha Reference Library

R.H. Charles' The Apocrypha and Pseudepigrapha of the Old Testament in English

James H. Charlesworth's The Old Testament Pseudepigrapha

H.F.D. Sparks' The Apocryphal Old Testament 

Michael E. Stone's Jewish Writings of the Second Temple Period

Hennecke/Schneemelcher/Wilson's New Testament Apocrypha 

Maurice Geerard's Clavis apocryphorum Novi Testamenti  

Brill's series of Studia in Veteris Testamenti Pseudepigrapha 

Josephus 

Complete Works of Philo (Yonge translation) 

The Early Jewish Writings Website 

The Early Christian Writings Website