How to sew a hat - detailed tutorial and free template for all head sizes - shows you how to draft/sew any kid of hat. mellysews.com
How to Sew a Hat - Melly Sews
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vintage aprons from the Kamakura-Shobo Publishing Co. Pattern Drafting books Vol. 1, 2, and 3, published in 1967, 1970 and 1972.