Demonstration of Protest and Mourning for Triangle Shirtwaist Factory Fire of March 25, 1911, 04/05/1911. Unrestricted.… https://www.rawpixel.com/image/8765655/photo-image-vintage-banner-womenFree Image from public domain licenseThe Splendid Naval Triumph on the Mississippi, April 24th, 1862: Destruction of the Rebel Gunboats, Rams, and Iron Clad… https://www.rawpixel.com/image/9183884/image-art-vintage-smokeFree Image from public domain licenseYankee Volunteers Marching into Dixie in 1862 by, Smithsonian National Museum of African Art https://www.rawpixel.com/image/8849095/yankee-volunteers-marching-into-dixie-1862Free Image from public domain licenseThe Eagle's nest The Union! it must and shall be preserved by E.B. and E.C. Kellogg, 1861, Smithsonian National Museum of… https://www.rawpixel.com/image/8849360/image-art-vintage-handFree Image from public domain licenseFlags at Fort Sumter in South Carolina. Original image from Carol M. Highsmith’s America, Library of Congress… https://www.rawpixel.com/image/421872/free-photo-image-american-flag-usa-national-libraryFree Image from public domain license