 The country musician Merle Travis makes a reference to coal scrip in the song, "Sixteen Tons" on the "Folk Songs of the Hills" album and made famous by Tennessee Ernie Ford.From 1914 to 1924, during and following the First World War, a variety of forms of German scrip were issued, including Notgeld, Lagergeld, Gutscheine and Serienscheine.Such currencies were issued "by principalities, German colonial governments, cities, large corporations, small businesses, prisoner-of-war camps, and in some cases, individuals."