Wisconsin Statutes Trade Regulations (Ch. 125 to 139) § 132.13. Labeling prison products; penalty

(1)(a) All goods, wares, and merchandise made wholly or in part by convict labor in any penitentiary, prison, reformatory or other establishment in which convict labor is employed except convicts or prisoners on parole, extended supervision or probation, shall before being exposed for sale be branded, labeled, marked or tagged as herein provided and shall not be exposed for sale or sold in this state without such brand, label, mark or tag. Such brand, label, mark or tag shall contain at the head or top thereof the words “convict-made” followed by the name of the penitentiary, prison, or other establishment in which it was made in plain English lettering of the style and size known as eighteen point Cheltenham bold type capitals. The brand or mark shall in all cases where the nature of the articles will permit be placed on each individual article or part of such article that is sold, and only where such branding or marking is impossible shall a label or tag be used and where a label is used it shall be securely pasted onto each such article and when a tag is used it shall be a paper tag securely fastened to such article or part of article sold. In addition to the marking of each article or part of article sold a similar brand, mark, label or tag shall be placed upon the outside or upon its box, crate, or other covering. All brands, labels, marks, and tags shall be placed on a conspicuous part of such article or part of article and its container.

(b) Paragraph (a) does not apply to goods, wares and merchandise made under a contract under s. 303.06(2).