- Squirrel or Ermine (Froschauer 1551). Part of Set of illustrations to Gessner's Historia animalium (Froschauer)
- Ermine (Mus Ponticus quem vulgo varium vocant). In Conrad Gessner, Conradi Gesneri medici Tigurini Historiae Animalium Lib[er] I de Quadrupedibus uiuiparis ..., Zürich: Christoph Froschauer (printer), 1551 (Halle (Saale), ULB), p. 839 ◼
- Squirrel (Sciurus). In Conrad Gessner, Conradi Gesneri medici Tigurini Historiae Animalium Lib[er] I de Quadrupedibus uiuiparis ..., Zürich: Christoph Froschauer (printer), 1551 (Halle (Saale), ULB), p. 956 ◼
- Squirrel. In Conrad Gessner, Icones Animalivm Qvadrvpedvm Viviparorvm Et Oviparorvm ..., Zürich: Christoph Froschauer (printer), 1560 (Zürich, ETH-Bibliothek), p. 110 ◼
- Ermine (Mus ponticus sive Venetus, Veeh). In Conrad Gessner, Thierbüch: Das ist ein kurtze bschreybung aller vierfüssigen Thieren ..., Conrad Forer (translator), Zürich: Christoph Froschauer (printer), 1563 (Zürich, ZB), fol. XIIIv ◼
- Squirrel (Sciurus, Aychhorn). In Conrad Gessner, Thierbüch: Das ist ein kurtze bschreybung aller vierfüssigen Thieren ..., Conrad Forer (translator), Zürich: Christoph Froschauer (printer), 1563 (Zürich, ZB), fol. XIIIr ◼
- Ermine (Mus Ponticus quem vulgo varium vocant). In Conrad Gessner, Conradi Gesneri Medici Tigvrini Historiae Animalivm Liber Primvs De quadrupedibus viuiparis... Editio secunda ..., Frankfurt am Main: Robert Cambier (printer), 1602 (Washington, DC, Smithsonian Libraries), p. 741 ◼
- Squirrel (Sciurus). In Conrad Gessner, Conradi Gesneri Medici Tigvrini Historiae Animalivm Liber Primvs De quadrupedibus viuiparis... Editio secunda ..., Frankfurt am Main: Robert Cambier (printer), 1602 (Washington, DC, Smithsonian Libraries), p. 845 ◼
- Squirrel. In Conrad Gessner, Icones Animalivm Qvadrvpedvm Viviparorvm Et Oviparorvm ..., Heidelberg: Andreas Cambier (printer), Johann Lancelot (printer), 1606 (London, BL), p. 110
- Squirrel (Sciurus). In Conrad Gessner, Conr. Gesneri Medici Tigvrini Historiae Animalivm Liber Primvs De quadrupedibus viuiparis... Editio secunda ..., Frankfurt am Main: Robert Cambier (printer), 1620 (Poznań, Biblioteka Uniwersytecka), p. 845
- Ermine (Mus Ponticus quem vulgo varium vocant). In Conrad Gessner, Conr. Gesneri Medici Tigvrini Historiae Animalivm Liber Primvs De quadrupedibus viuiparis... Editio secunda ..., Frankfurt am Main: Robert Cambier (printer), 1620 (Poznań, Biblioteka Uniwersytecka), p. 741