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Fighter S-20, 1914 during World War I

Fighter S-20 Public domain photograph of experimental aircraft, prototype, aviation design and development, no copyright restrictions image - Picryl description

Fighter S-20, front during World War I

Fighter S-20 Public domain photograph of experimental aircraft, prototype, aviation design and development, no copyright restrictions image - Picryl description

Fighter S-20 during World War I

Fighter S-20 Public domain photograph of experimental aircraft, prototype, aviation design and development, no copyright restrictions image - Picryl description

Fighter S-20, Russia during World War I

Fighter S-20 Public domain photograph of experimental aircraft, prototype, aviation design and development, no copyright restrictions image - Picryl description