The following have been added to the Zotero Group for Ancient World Open Bibliographies and the Ancient World Open Bibliographies Wiki.
Latin Authors
Tacitus and Nero: Select Bibliography
http://faculty.washington.edu/alain/Lat424Tacitus/Select%20Tacitus%20Bibliography%2811%29.htm
Alain Gowing, Department of Classics, University of Washington.
No last update date; latest work is 2009 (course taught spring 2011).
This is a selected bibliography for a 4th year latin class, with works mostly in English, and including bibliographies, commentaries, a concordance, and general works on Tacitus and Nero and the historical background. See also his Select Bibliography on Tacitus and the Opera Minora, which is older, but more detailed, with sections on Agricola, Germania, and Dialogus. http://faculty.washington.edu/alain/Lat520TOM/Bibliography.html
Tacitus, Bibliography
http://www.inform.umd.edu/EdRes/Colleges/ARHU/Depts/Classics/Faculty/SRutledge/TacBib/index.html
Steven Rutledge, Department of Classics, University of Maryland.
No last updated date; latest works are late 1990s.
A selected bibliography, with a heavy focus on Tacitus’ Dialogus de oratoribus but also sections on editions, general works, and other topics in Tacitus.