Keywords: public domain elusive muse collage fodder drawing reference monochrome blackandwhite sketch writing text indoor cartoon white background illustration black and white Public Domain Book: Petrefactenkunde Deutschlands by Quenstedt, Fr. Aug. von (Friedrich August), 1809-1889 Published 1846 archive.org/details/petrefactenkunde7778quen Public Domain Book: Petrefactenkunde Deutschlands by Quenstedt, Fr. Aug. von (Friedrich August), 1809-1889 Published 1846 archive.org/details/petrefactenkunde7778quen |