Back in the 1960's, Herter's mail-order catalog had an absolutely incredible array of hunting, fishing and outdoor items. It was as thick as a JCPenney or Sears catalog of the era. Decoys were a small but important part of the business.
The Herters business name has been sold many times. If I remember correctly, George sold the business in the 1980's but I can't remember to whom. It was then sold to Northern Hydraulics (now Northen Tool) in the late 1980's/early 1990's. Cabelas bought the name in the early 2000's and now mostly just sells decoys and a few clothes under the Herters name. As far as I know, they are still making decoys in Beaver Dam, WI.
I tired hard to love Herters original all-foam decoys, but unless you leave them out all season, in my expereince they are just too fragile to pick up and bag after each hunt. The only way you can keep them from getting dented and scratched was/is to use slotted bags. Not worth it IMHO.
The plastic-coated and burlapped Supremes and Ultimates are a huge improvement, but also add considerably to the cost and weight. Still, they take shot almost as well as cork and they are great for diver hunting. Using Herters adds a touch of history and nostalgia to our sport, but I can't advise using the plain foam version unless you can leave your decoys out all season.