Comedian & masks from An illustration of the Egyptian, Grecian and Roman costumes by Thomas Baxter (1782–1821).… https://www.rawpixel.com/image/421028/free-illustration-image-romans-masks-greekFree Image from public domain license
Masked Gerygone (Gerygone personata) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321476/free-illustration-image-elizabeth-gould-fairy-johnFree Image from public domain license
Masked Gannet (Sula personata) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds of… https://www.rawpixel.com/image/321575/free-illustration-image-australia-gannet-birdsFree Image from public domain license
Masked Grass Finch (Poephila personata) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321154/free-illustration-image-grass-john-gould-finch-australiaFree Image from public domain license
Black masked Roller from Histoire Naturelle des Oiseaux de Paradis et Des Rolliers (1806) by Jacques Barraband (1767-1809). https://www.rawpixel.com/image/328367/free-illustration-image-jacques-barraband-century-vintageFree Image from public domain license
Masked Wood Swallow (Artamus personates, Gould) illustrated by Elizabeth Gould (1804–1841) for John Gould’s… https://www.rawpixel.com/image/320996/free-illustration-image-elizabeth-gould-australia-swallowFree Image from public domain license
Daniel Field, Georgia. Air Service Command. Class in gas mask procedure. Sourced from the Library of Congress. https://www.rawpixel.com/image/12296080/photo-image-face-person-skyFree Image from public domain license
Fort Belvoir, Virginia. Sergeant George Camblair learning how to use a gas mask in a practice smokescreen. Sourced from the… https://www.rawpixel.com/image/12287620/photo-image-people-smoke-public-domainFree Image from public domain license
Greenville, South Carolina. Air Service Command. Enlisted man folding up his gas mask to hang on his wall after having worn… https://www.rawpixel.com/image/12295244/photo-image-face-person-artFree Image from public domain license
Head of wigwam decorated with Indian dancing mask (Woods Indian). Local Indian association-sponsored Indian bazaar and fair.… https://www.rawpixel.com/image/12285793/photo-image-face-plant-peopleFree Image from public domain license
Grain elevator employee. Minneapolis, Minnesota. He wears mask while unloading grain from freight cars. Sourced from the… https://www.rawpixel.com/image/12283766/photo-image-face-person-public-domainFree Image from public domain license
[Untitled photo, possibly related to: Fort Belvoir, Virginia. Tank driver]. Sourced from the Library of Congress. https://www.rawpixel.com/image/12286629/photo-image-face-person-sunglassesFree Image from public domain license
[Untitled photo, possibly related to: Fort Belvoir, Virginia. Sergeant George Camblair learning to use a gas mask in a… https://www.rawpixel.com/image/12287734/photo-image-person-smoke-public-domainFree Image from public domain license
[Untitled photo, possibly related to: Greenville, South Carolina. Air Service Command. Enlisted man folding up his gas mask… https://www.rawpixel.com/image/12294860/photo-image-face-person-woodFree Image from public domain license
Ammonia gas mask in the power room of the United Farmers' Cooperative Creamery in East Berkshire, Vermont. Sourced from the… https://www.rawpixel.com/image/12279957/photo-image-technology-public-domain-maskFree Image from public domain license