The Seals of the KKK are listed in 1966 edition of the Mosbaugh All Fund Catalog, Civic and Fraternal section. The reason they were removed is a mystery; perhaps they were considered too evil by the editor, Ray Mosbaugh. Several hide behind patriotic themes; others have more direct messages. The "U before V" window label at first glance appears to be a WW2 patriotic label, but was issued by the KKK. Below is an old article about this seemingly patriotic label, where noted author of his day, Frank Colby supports ideas put forth by the supreme Klan leader, the Imperial Wizard.
kkk article-1.pdf