[ Ernst Engel, German statistician. ] Autograph Signature ('Dr. Engel') to manuscript letter, in German, to Frederick Martin, editor of the 'Statesman's Year-Book'.

Ernst Engel (1821-1896), German statistician and economist, commemorated by the Engel curve and the Engel's law
Publication details: 
Berlin, 27 July 1878. On letterhead of the 'Statistisches Bureau' of the Kingdom of Prussia.

2pp., 8vo. Heavily aged and creased, with slight damage to signature. 20 lines of text, neatly written out by a secretary. Concerning revisions to his entry in the volume. Scan supplied on request.

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