Deletion of Correspondence between Miguel Miramón and Concepción Lombardo

Comment: to Miguel Miramón (which is rather short and should be expanded significantly in general). The question, in my mind, is whether this collection meets  - from what I see (in the sourcing in the article, and in a BEFORE) - this does not seem to be the case, though it is of some importance
Stance: merge
Cited policy: Wikipedia:Notability (WP:NBOOK)