A person who makes lithographs, who does lithography(noun)
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Use "lithographer" in a sentence
"Although Wilson is best known as a lithographer a Wilson lithograph of Thorpe sold a few years ago for $230 at auction, his bronze works do turn up from time to time."
"And so, upon completion of school, he decided to seek work in a trade, ultimately becoming a journeyman lithographer."
"My brother was a lithographer willing to lend his skills."