Perform a subject search on your general topic in the SOUTHcat catalog and limit to "Marx Library Reference". If you find a good reference item, scan relevant entries and bibliographies for major scholars. As you look in multiple sources, be sure to take note of names which re-appear, and the dates of their major works.
Sometimes, a very broad reference work on historiography, like the one below, may be available:
How to Gut a Book
Read footnotes (or endnotes as the case may be) & the bibliography
The introductions to book-length histories usually not only name the primary source materials used but also situate the scholarship in relation to other histories and historians in the field.
Note how, below, in Dr. Strong's introduction to Education, Travel and the 'Civilisation' of the Victorian Working Classes, she cites positions her own book in relation to the other scholars' work on travel. On page 5 alone, she mentions works by Engerman, Clifford, Benson, Bailey, and Rose.