Looks like they still made them for the camping enthusiasts. Here is a page from a 1967 catalog with the big #20 skillet and also what looks like a tite-top Dutch Oven. A later page has a Griswold skillet display rack with skillets from sizes 3 through 14 available.
The aluminum Dutch Ovens on this page would have been from Scott Manufacturing out of Ohio at this time. Later in the catalog is the pliers/lid lifter that Scott made. GSI Outdoors didn't buy out Scott until the 1980's.