The only preserved photograph of Lincoln in death. Taken 24 April 1865, by Jeremiah Gurney, Jr., City Hall, Manhattan, NY. Ver: http://www.abrahamlincolnonline.org/lincoln/news/rietveld.htm
Hindenburg disaster in 1937. Was an airship from Germany that caught on fire, crashing in New Jersey. Because the incident caused for many to lose faith in airships, the disaster marked the end of the era of airships.