Those are woodblock prints by 土屋光逸[Tsuchiya Kōitsu]. The nightscape one is titled 品川沖 [Shinagawa Oki] "Shinagwa Coast", and the one of Mt. Fuji is 西湖の夕照[Sai-ko no Yūshō] "Lake Sai Sunset".
Thank you so much Toritoribe and Mike C! Really looking forward to reading up on Tsuchiya Kōitsu now. Sort of surprised they're that old. Glad I've taken care of them, but it was easy because they're so nice to look at.