The term “bookplate” includes all separately printed sheets that have been or may be pasted into a book, including illustrations that are pasted onto pages when the book is published. (Sometimes “bookplate” is shortened to “plate”.) A bookplate used to identify an owner is sometimes called an “ex libris bookplate”, and sometimes this term is shortened to “ex libris”; but “ex libris” really means from the library or from a library.
And people at the end of the 19th Century did not use the term “gender” to distinguish men and women. The term “gender” was then one of grammar. Later, it became a mincing term for sex. (Still later it referred to a broader range of social constructs than just those of grammar. Still more recently, it has degenerated into a term for attempting to subvert biology.)