Here are 4 types of brochures that the Ground Observer Corps used throughout its existence. The two at the end are from 1955 and 1951 respectively. The smaller one on the right is an updated version of the original 1951 edition. Two have contact information for the local Civil Defense offices and the other two just list the general Washington, DC office. All have the same basic information. These are just the 4 that I’ve collected so far. Do you have an old GOC brochure or have memories of these brochures? Send us an Aircraft Flash and let us know!