HMB lists two probably different composers "E. Reiter" (two "streams" of chronologically basically consistent opus numbers, one starting about a decade later than the other. The earlier one seems to be the same as the occasional appearances of "Ernst Reiter", while the later one might conjecturally be Elisa Reiter (1821–1893). LoC has two works by "E. Reiter", one of which is probably, from this analysis, by Elisa Reiter (since it, an opus 6, first appears a decade after the other's string quartets opus 7 and 8); however, at least one other source attributes it to Ernst Reiter. Edit: Opus 6's title page in fact says Ernst Reiter. (Of course, there could also be two composers by that name, but cross that bridge...)
