Daniel L. Schwartz and Nathan P. Gibson (eds.), "Brooks, A Collection of Letters of Severus of Antioch, fasc. 1" in last modified October 27, 2015, http://syriaca.org/bibl/670 E. W. Brooks Letters I to LXI E. W. Brooks A Collection of Letters of Severus of Antioch, from Numerous Syriac Manuscripts http://syriaca.org/bibl/677 Firmin-Didot et cie Paris 1919-1920 2 fasc I R. Graffin F. Nau Tomus Duodecimus http://syriaca.org/bibl/679 Firmin-Didot et cie Paris 1919 II 164-342 R. Graffin F. Nau Patrologia Orientalis 12 http://syriaca.org/bibl/670 Daniel L. Schwartz and Nathan P. Gibson (eds.), "Brooks, A Collection of Letters of Severus of Antioch, fasc. 2" in last modified October 27, 2015, http://syriaca.org/bibl/671 E. W. Brooks Letters LXII to CXVII E. W. Brooks A Collection of Letters of Severus of Antioch, from Numerous Syriac Manuscripts http://syriaca.org/bibl/677 Firmin-Didot et cie Paris 1919-1920 2 fasc II R. Graffin F. Nau Tomus Decimus Quartus http://syriaca.org/bibl/680 Firmin-Didot et cie Paris 1920 I 1-310 R. Graffin F. Nau Patrologia Orientalis 14 http://syriaca.org/bibl/671 Daniel L. Schwartz and Nathan P. Gibson (eds.), "Brooks, A Collection of Letters of Severus of Antioch (2 fasc.)" in last modified October 27, 2015, http://syriaca.org/bibl/677 E. W. Brooks A Collection of Letters of Severus of Antioch, from Numerous Syriac Manuscripts Firmin-Didot et cie Paris 1919-1920 2 fasc R. Graffin F. Nau Tomus Duodecimus http://syriaca.org/bibl/679 Firmin-Didot et cie Paris 1919 II 164-342 R. Graffin F. Nau Patrologia Orientalis 12 http://syriaca.org/bibl/677