1876 Philadelphia US Centennial Exposition - Engravings, Letters Belgium Exhibitor

Intriguing lot, possibly of some value - an exhibit submission, consisting of a few associated letters and a leaf of med. weight paper, 7.75" x 12"paper, both sides w/ pen & ink, wash engravings, 

With paper folder, possibly from the Centennial, labeled, "Agency of L. De Grace, or DeGrace, Lithography, Huy, Belgium.

Note:  Someone who glanced at this a number of years ago thought text might be by or associated w/ Francois de Malherbe, French poet.

Condition:  Engraved leaf w/ tears, small amount loss bottom; submission papers w/ wear, few tears.  Overall clean VG-VG+

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