Špindlerův Mlýn, Czechia. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3289341/free-photo-image-abies-aerial-view-cc0Free Image from public domain licenseToilet plunger illustration, clip art. Free public domain CC0 image. https://www.rawpixel.com/image/10096279/image-illustrations-public-domain-circleFree Image from public domain licenseMagnifying glass and finger prints illustration. Free public domain CC0 image. https://www.rawpixel.com/image/9778882/image-people-pattern-illustrationsFree Image from public domain licenseSilverthorne, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3290985/free-photo-image-cc0-cloud-pictures-images-cloudscapeFree Image from public domain licenseVintage European style steam locomotive engraving from The Tourists' Handy Guide to Scotland by William Paterson (1880).… https://www.rawpixel.com/image/556360/vintage-steam-train-illustrationFree Image from public domain licenseFactory from Pittsburgh's progress, Industries and Resources (1886) published by George H. Thurston. Original from the… https://www.rawpixel.com/image/572926/factory-the-industrialization-eraFree Image from public domain licenseSmoking farmer with branches by Kōno Bairei (1844-1895). Digitally enhanced from our own original 1913 edition of Barei… https://www.rawpixel.com/image/459434/free-illustration-image-smoking-japanese-woodblock-sickly-sketchFree Image from public domain licenseScissors and pipe from Canoe And Camera: A Two Hundred Mile Tour Through The Maine Forests (1880) published by Thomas… https://www.rawpixel.com/image/571700/barber-shop-equipmentFree Image from public domain licenseMethod of smoking fish, game and other provisions illustration from Grand voyages (1596) by Theodor de Bry (1528-1598).… https://www.rawpixel.com/image/328214/free-illustration-image-medieval-war-vintageFree Image from public domain license