Lugar Industries made kits boats in Minneapolis. In July 1955 their address was 4452 Nicollet Avenue South, 5 blocks from where I lived for the past twenty years. In Feb. 1958 their address was 3404 Lyndale Ave. South, about a mile from my former home. Both addresses are very small, store-front type shops in primarily residential neighborhoods. The Lyndale site is a record store and laundry today. Later they were in Bloomington, south of Minneapolis.
I only have a 1969 brochure. There may be some earlier literature in the Glassic Library of www.fiberglassics.com