The cdvs above have gilt and mitred edges, and are blank on the back, typical of the late 1880s to mid 1990s.
The text on the second is similar to that on the cabinet cards below, which would suggest that they are roughly contemporary. The slight increase in card thickness of the second supports this sequence of the two.
The two elegant portraits above on cabinet cards above are probably very late 1990s or even early 1900s. The cards below more clearly belong to the early years of the twentieth century, but the dating is uncertain.