I got back from the biennial C19 conference last week. It was an excellent four-day event, with presentations from many scholars who focus specifically on American literature of the 19th century.
That said, transnational approaches were in abundance, including my own paper on Jules Verne’s influence on American adventure fiction (with nods to trends in Oceanic Studies). Here is a screen clip from the slideshow:
The image on the cover is from an 1894 dime novel entitled Frank Reade, Jr. Exploring a Submarine Mountain; or, Lost at the Bottom of the Sea.