Johann Heinrich Pestalozzi Autograph Johann Heinrich Pestalozzi I have here an investigation

I have here an investigation for which the measurement of such fine currents is necessary

shows Alex Katz in a full length portrait

je Bogen bei Ablieferung des Manuskripts

signed on the title free page in blue ballpoint ink "Ernst Fuchs"

Johann Heinrich Pestalozzi Autograph Johann Heinrich Pestalozzi I have here an investigationAutograph letter signed, one page, 4,5 x 7,5 inch, (receipt note: 7. 02. 1795), in German, to Mr. Escher (probably Hans Caspar Escher vom Glas, 1769 1847) concerning an impossible visit and a formal plan, written and signed in dark ink "Pestalozzi", attractively mounted (removable) for fine display with a picture of Johann Heinrich Pestalozzi (altogether 11,75 x 8,25 inch), with a few ink stains, and mild signs of wear in fine condition. In parts:"[]