This 1877 German-English & English-German dictionary is available on GoogleBooks as a PDF download:
A Compendious German and English Dictionary
With Notation of Correspondences and Brief Etymologies, by William Dwight Whitney, August Hjalmar Edgren · 1877.
Thanks to Katherine Schober of SKTranslations for mentioning her copy of this book on Facebook, which prompted me to look for it.
