Terrific Big Lot of Vintage DLM Parquetry Tiles and Design CardsI always have an eye out for vintage DLM (Design Learning Materials) sets produced in the 60s and 70s for use in schools; the materials are invariably thoughtful and smart, and the graphics really great, making them as much design object as teaching tools. And these parquetry tiles and design cards are my favorites of all. This set includes one full box of colorful wooden tiles and three sets of design cards, which provide forms and shapes to