NC 192 #2 appears in an Winston-Salem Journal Article. The article quotes NCDOT as indicating that when the Winston-Salem Beltway is completed between existing I-74 southeast of the city northward across I-40 and on around, the piece of I-74 between the beltway and I-40 near the US 52 interchange will be designated as NC 192. Credit to aaroads posted LM117 for finding this article.
NC 192 #1 appeared about 1928 running from NC 19 (now NC 108) Mill Spring north to US 74/NC 20 (now US 64/74A) Lake Lure.
In 1931, NC 192 was extended south as new primary routing to the South Carolina line, where the route continued as SC 177 to Spartanburg.
In late 1937, NC 192 was renumbered as NC 9.

N.C. 192 appears

N.C. 192 extended to S.C.

N.C. 9 replaces N.C. 192