https://fryskmuzykargyf.nl/product/si-tanto-gratiosa-harm-j-slofstra/
Si tanto gratiosa / harm.: J. Slofstra – Frysk Muziek Argyf
tantogratiosaharmfryskmuziek
https://muzeumcyfrowe.pl/en/dlibra/publication/4848/edition/4488/eurema-arbela-gratiosa-doubleday-1847
Eurema arbela gratiosa (Doubleday, 1847) - Museum of University of Wroclaw
Museum of University of Wroclaw , is created by Wroclaw University Library
euremaarbelagratiosadoubledaymuseum