A set of self-adhesive poster board letters once made by the E-Z Letter Stencil Company and sold under the name “Quik Stik” was the model for School Project JNL.

Ironically, the line was discontinued because they did not stick very well – the weight of the cardboard caused the letters (which used a rubber cement type of glue) to pull away from the surface they were mounted to. 

Unlike vinyl self-adhesive letters (which were formulated for indoor or outdoor use) these cardboard sets were relegated to indoors only; further restricting their usability.