A 2015 study of the “Indexing of Mapping Science Journals”, including cartographic history journals.

* Found that 47 such titles were published as free / open access, but that only eight of those were in the DOAJ.

* Of the 47 free / open access titles, 12 were represented in Google Scholar by 10 or less articles.

* Scopus indexed 18 of the 47 free / open access titles.