Folio family (Linotype library) contains 6 fonts.
Folio was designed by Konrad F. Bauer and Walter Baum and appeared with the Bauer font foundry (Bauersche Gießerei) in 1957. The designers based their ideas on Helvetica but Folio did not turn out to pose the competition they had hoped. The font has the same applications as Helvetica and is an extremely legible font. Folio is particularly good for text and has an objective, neutral character.