Citation, Documentation of Sources

Q. I am trying to document a long-standing journal which has undergone numerous title changes and publication sites. What title should I use for the multiple journal entries in the bibliography: the current title for all the entries or the title that was in use at the time of the issue publication? I have verified with the publisher that all the title variations (and differing places of publication) do indeed belong to the same journal. The changes are not extreme: no subtitle to a rather generic title or various subtitles attached to the generic main title.

A. List the journal titles as they were at the time of publication, and explain the variation in a headnote or footnote or annotation to the entries. The city of publication is not normally part of a journal citation, so you needn’t worry about that.

[This answer relies on the 17th edition of CMOS (2017) unless otherwise noted.]