Navajo weaving Germantown Sampler from the 1900's. Beginning in the 1870’s, many trading post owners on the Navajo reservation began to provide commercial yarns to the weavers they worked with on a regular basis. Traders looked at these plied yarns that came from Eastern woolen mills, principally the ones around Germantown, Pennsylvania, in different ways. Some traders encouraged their better weavers to use these commercial yarns as they created sharp and bold designs. Germantown yarns slowly disappeared from Navajo weaving beginning around 1910. But you can still have one today! Measures 20.5 by 20.5 inches.