Martin Luther and Omar ?

Fig.1 - German Postcard, c.1910.
Fig.1 - German Postcard, c.1910.
Fig.2 - German Postcard, c.1900.
Fig.2 - German Postcard, c.1900.
Fig.3 - German Poster, c.1880.
Fig.3 - German Poster, c.1880.
Fig.4 - American Print, c.1873.
Fig.4 - American Print, c.1873.