PARSEVAL François Max August von [Frankenthal, 1861 - Berlin, 1942], German engineer. Autograph letter signed, addressed to Gustave Eiffel. 1 1/2 page in-4°, edges a little frayed. Header printed with his name and address. He thanks him for sending his book on resistance which interested him to the highest point. "However, I found it difficult to make a clear distinction between good and bad experiences. I believe that the results of institutes such as yours and that of I believe that the results of institutes such as yours and Göttingue's are worthy of full confidence. I had very pleased with the beautiful photographs, especially the one showing your portrait. »

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