- $48.52Constructing Cromwell : Ceremony, Portrait, and Print, 1645-1661 by Laura Lunger KnoppersBetter World Books
- $9.98Knoppers Wafers | Knoppers Milk Hazelnut Wafer | Crispy Wafer With Milky Hazelnut Flavor | Knoppers Chocolate | 4.4 Ounce Total WeightAmazon
- $15.99Storck Knoppers Milk and Hazelnut Cream wafer -10 pack -Amazon
- $1.20Oak Galls, Knopper, Divination, Increase & Enhance Power, Strength, Ink, Pagan, WitchcraftEtsy