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Wool and cotton, 62 x 81 inches
This flag is thought to have belonged to an infantry unit. At some point in its history a black cross with a white ribbon was added to the flag, probably as a symbol of mourning. It is unknown whether the decoration was added during the war to memorialize a fallen officer, or after the war to mark a veteran's passing.
1980 Conservator's report - Panhandle Plains Historical Museum
from the Texas State Library and Archives Commission: