Folio Font Family was designed by Konrad Friedrich Bauer, Walter Baum and published by Bitstream. Folio contains 7 styles and family package options. Designed by Konrad Bauer and Walter Baum in 1956, Folio was the first popular Swiss Sanserif; the positive black shapes of the letters appear to be locked inevitably into the correct position by the firm and positive white shapes that surround them.