Here are some insights about cover letters by Dr. Paul Woods, an editor with the journal Nature Astronomy (with emphasis added, read the full interview here).
- Cover letters are a place for direct communication to the editor dealing with your paper, and they are not seen by reviewers, so they’re a perfect place for frank and open communication.
- [Do not include] the abstract, I can read it in the manuscript. Same holds for an author list with their list of affiliations (unless the authors have opted for double-blind peer review). Never ever just copy-paste the entire paper in the cover letter… Yes, some people do this.
- I would like to see a concise summary of the work that has been performed. One or two paragraphs are ideal.
- InNature Astronomy, the author is also required to indicate how the work or the results make an improvement over previous work, that is, other refereed papers in the literature. More specialist journals might not have this strict requirement. The authors can be explicit here – I appreciate things like “Our results are more robust than XXX et al. because they didn’t do any completeness tests, whereas we perform these in a couple of ways (see Methods section).” Knowing these things not only helps me to assess the impact of the work, but also to spot whether the reviewers have fully appreciated the level of advance that the current paper makes.
- The cover letter is also the right place to communicate relevant information of organizational nature. For example, if there are time pressures or restrictions on the publication of the manuscript. Do mention if there is a companion manuscript with which publication has to be synchronized.
- I like to see suggestions for good referees who will appreciate the topic and importance of the work. But don’t give a list of colleagues and collaborators… Editors do check! On this note, I also welcome suggestions for referees to avoid because of some professional conflict.
