Sign on traffic stop-light in Hartford, Connecticut indicating housing shortage. Sourced from the Library of Congress. https://www.rawpixel.com/image/12247569/photo-image-plant-sky-lightFree Image from public domain licenseAlert Attention Caution Critical Danger Error https://www.rawpixel.com/image/1100506/image-rawpixelcomView licenseCaution Alert Critical Error Failure Notice https://www.rawpixel.com/image/1100483/image-rawpixelcomView licenseNotice Alert Attention Danger Error Warning https://www.rawpixel.com/image/1100457/image-rawpixelcomView licenseNotification Alert Attention Caution Error https://www.rawpixel.com/image/1100471/image-rawpixelcomView licenseImportant Caution Attention Alert Risk Stop https://www.rawpixel.com/image/1100466/image-rawpixelcomView license[Untitled photo, possibly related to: Department of Agriculture exhibit. Washington, D.C.]. Sourced from the Library of… https://www.rawpixel.com/image/12276931/photo-image-public-domain-nature-windowFree Image from public domain licenseCorner store at 11 p.m. Durham, North Carolina. Sourced from the Library of Congress. https://www.rawpixel.com/image/12275850/photo-image-person-road-public-domainFree Image from public domain licenseUrgent Alert Attention Caution Error Warning https://www.rawpixel.com/image/1100489/image-rawpixelcomView licenseReminder Alert Attention Critical Error Notice https://www.rawpixel.com/image/1100559/image-rawpixelcomView licenseWarning Sign Caution Icon Word https://www.rawpixel.com/image/1100892/image-rawpixelcomView licenseBeware Alert Attention Caution Risk Warning https://www.rawpixel.com/image/1100569/image-rawpixelcomView license