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for Leslie Company
BiographyCap manufacturer based out of Boston, MA. "Jacob Kaufman's newly formed Leslie Company took over Spalding's cap making business around 1949 or 1950. He soon partnered with Tim McAuliffe, who was rapidly gaining business as a distributor to MLB teams, and by 1953 the pair had introduced the KM Pro model cap to MLB (side note - Kaufman also patented the cardboard insert in 1956). In addition to making caps under the McAuliffe label, KM Pro caps were distributed by Mitchell & Ness into the mid-1950's, and were manufactured for Wilson. From the mid-1950's to mid-1960's, Tim McAuliffe's KM Pro model caps were used by every team at some point. After Tim McAuliffe closed in 1968 or early 1969, Leslie continued making caps for MLB teams, changing the McAuliffe label to the KM Pro label. Leslie also made MLB Caps under their own Leslie label. By the early 1970's, New Era had virtually taken over the cap market. KM Pro closed in late 1976, and its equipment was sold to New Era, to startup Devon Professional Cap, and to Roman Art which then started the Roman Pro cap label."--https://mlbcollectors.com/capmakers.php
