Found it. Nice price on Barnes and Noble too:
https://www.barnesandnoble.com/p/u-boat-977-heinz-schaeffer/1126390656/2660083905821?st=PLA&sid=BNB_DRS_New+Marketplace+S hopping+Books_00000000&2sid=Google_&sourceId=PLGoP 211463&gclid=EAIaIQobChMIofKym8q93AIVE77ACh1vhAPAE AQYAiABEgLVi_D_BwE