491. Asta Collection: Postcards of female and male impersonators and cross-dressing in Europe and the United States, 1900-1930 Date: ca. 1910 Format: Image Publisher: Nordische Kunstanstalt Ernst Schmidt & Co., Lubeck
492. Asta Collection: Postcards of female and male impersonators and cross-dressing in Europe and the United States, 1900-1930 Date: ca. 1910 Format: Image Publisher: Nordische Kunstanstalt Ernst Schmidt & Co., Lubeck
493. Aratinga luteus s. Guarouba. Collection: Hill Ornithology Collection Date: 1824 Format: Image Creator: Schmidt, Matthias (German artist, 1749-1823)
494. Approximate Lever Parallel Scale Mechanism of Pfitzer Unvollkommene Hebelparallelführung, Oberschalige Wage von Pfitzer Collection: Reuleaux Kinematic Mechanisms Collection Set: T. Parallel Guide Mechanisms Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt
495. Approximate Four-bar Straight-Line Linkage of the Second Kind After Evans Angenäherter Ellipsenlenker II. Art Collection: Reuleaux Kinematic Mechanisms Collection Set: S. Straight-line Mechanisms Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt
496. Approximate Four-bar Straight-line Linkage of Roberts Dreieckslenker von Roberts Collection: Reuleaux Kinematic Mechanisms Collection Set: S. Straight-line Mechanisms Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt
497. Approximate Four-Bar, Ellipse Linkage of the Third Kind Angenäherter Ellipsenlenker III. Art Collection: Reuleaux Kinematic Mechanisms Collection Set: S. Straight-line Mechanisms Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt
498. Annular Slider-Crank Mechanism Kurbelviereck mit Bogenschleife Collection: Reuleaux Kinematic Mechanisms Collection Set: D. Crank Mechanisms Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt
499. Annular Slider-Crank Mechanism Kurbelviereck mit Bogenschleife Collection: Reuleaux Kinematic Mechanisms Collection Set: D. Crank Mechanisms Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt
500. Anchor Escapement with Lever Ankerhemmung mit Unruhe Collection: Reuleaux Kinematic Mechanisms Collection Set: X. Clock Escapements Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt
