A 19th-century advertising broadside or trade sheet for M. Donahue, based at the Le Claire Foundry and Machine Shop in Davenport, Iowa. The document is printed on paper and features a large wood-engraved illustration of a threshing machine at the top, signed BAKER in the lower right of the engraving. The text is printed in a variety of decorative period typefaces, identifying M. Donahue as a manufacturer of threshing machines, horse powers, steam engines, mill gearing, and general machinery. The company address is noted as the corner of Front and Scott Streets in Davenport. The advertisement is mounted on a light-colored backing sheet and housed in a black frame with a metallic silver-toned inner lip.