I’m posting some links to online resources for scholarly books and links on Biblical studies and related matters. They are in the public domain and very helpful, so the list will continue to grow and will reflect a variety of old scholarly works.
Lexundria has translations of Josephus by Whiston as well as many other ancient texts.
Ellopos has a helpful format for the LXX with 2 columns, reflecting Brenton and the LXX.
Blue Letter Bible has helpful resources for doing word searches and studying the text. The LXX is not searchable in Greek, though, andd neither is Brenton’s translation included.
Kata Biblon is a nice lexicon for the LXX and GNT, and although it is not exhaustive it lists the occurrences of each word and links to lexical definitions. So while some terms in the LXX are not included, most are and the format is easy to navigate.
Early Christian Writings has a wealth of information, with English translations of early texts as well as introductory treatments.
Perseus has two features that I use: the Greek Word Study Tool (which is basically a searchable lexicon with the added feature of parsing whatever form you enter) and the catalogue of texts in Greek, some of which also have English translations on the site. You can search for a word with the Study Tool and then see where in the database that word is also used. This does not include Philo or the LXX, nor the Apostolic Fathers, but it does contain the NT, Eusebius, Josephus, Barnabas, and much more.
Hunter. Paul and His Predecessors (1961)
Adams. St. Paul’s Vocabulary: St. Paul as a Former of Words (1895)
Referenced by Allen in “The Lukan Authorship of Hebrews.” An interesting linguistic resource.
Alexander. The Leading Ideas of the Gospels (1892).
Giles. The Writings of the Early Christians of the Second Century (1857).
Godet. A Commentary on the Gospel of Luke. Vol. 1 (1875) and
Godet. A Commentary on the Gospel of Luke. Vol. 2 (1881).
Godet. Studies of Creation and Life (1882).
Jackson. The Apostolic Fathers and The Apologists of the Second Century (1884).
A critical edition of the LXX.
Tischendorf. Travels in the East (1847).