http://books.google.com/books?id=0pEdAQAAIAAJ&pg=RA1-PA19&lpg=RA1-PA19&dq=sweet+potato+malt+syrup&source=bl&ots=HO3K70D4_U&sig=QlDKndFL_pG4LEGYZ2QE35Bqzto&hl=en&sa=X&ei=DbF8UM7cAqmH0QGi1oCoCA&ved=0CCcQ6AEwAQ
Set out to make a pumpkin beer last fall, stumbled across that article from 1920 and...