The following organizations, listed alphabetically, are publishers and distributors of Bibles, gospel tracts, commentaries, periodicals, and related materials. (Inclusion on this list does not imply endorsement.)
The following publications represent writings by various "Plymouth Brethren" authors; these items are generally available from the organizations listed on the "Publishers Page". I have found these resources helpful; I trust you will as well.
Holy Bible. English translation by J. N. Darby.
Synopsis of the Books of the Bible, by J. N. Darby.
The Darby Disk, (CD-ROM). Edited by J. L. Hodgett.
Notes on the Pentateuch, by C. H. Mackintosh.
Miscellaneous Writings, by C. H. Mackintosh.
The Christian's Path in Days of Difficulty, by M. W. Biggs.
A Warning and an Appeal, by C. A. Coates.
Put Your Captain's Name In It.
Gospel tract by G. Cutting.
"Prove all things, hold fast the right" (1 Thessalonians 5:21).