Two historical reference works

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1 x complete dictionary of the French and German languages by MA Thibaut, 43rd edition, published by George Westermann Braunschweig 1863 and 1 x Dr. Friedrich Erdmann Petri's handbook of foreign words in written and colloquial German, 15th edition, Goldsteinverlag Dresden 1891, each half-leather cover, signs of age and wear (including rubbed cover)