the right picture
The right upper corner is the title of the picture 芳年武者无類 篠塚伊賀守貞綱 Yoshitoshi Mushaburui, Shinozuka Iganokami Sadatsuna. Yoshitoshi is the artist name 月岡芳年 Tsukioka Yoshitoshi, and Yoshitoshi Mushaburui is the title of his series, meaning Warriors Trembling with Courage. Shinozuka Iganokami Sadatsuna is the name of the samurai in the picture.
The print date 明治十九年一月 January, 1986 is on the lower left corner, but the rest are too small to read.
the left picture
The artist is 香蝶樓豊國 Kōchōrō Toyokuni, i.e, UtagawaToyokuni IV / Utagawa Kunisada II. 見立三十六句撰 Mitate Sanjūrokkusen (meaning 36 poems selection) is the series title, and 新中納言とも盛 Shin-Chūnagon Tomomori is the name of the samurai in the picture. 傀儡師阿波乃鳴門遠小唄哉 is the poem which is probably related to him.
The lower left corner is the publisher name 吉伊勢兼, i.e., 伊勢屋兼吉 Iseya Kanekichi.