This book celebrates the most famous typeface of renowned German graphic designer and typographer Otto "Otl" Aicher (1922-1991), the Rotis font family, along with its connections to Rotis in the city of Leutkirch im Allgäu, where Aicher lived and ran his studio. The basis of otl aicher / rotis is a series of photographs by Timm Rautert which he took on numerous visits to Rotis between 1972 and 1991. Rautert also writes for the first time about working with Aicher, revealing the details of their collaborations including their book on the Berlin Philharmonic Orchestra. An essay by typographer and design historian Dan Reynolds explores the creation and aesthetics of the Rotis font family, including Rotis grotesk, Rotis semi-grotesk, Rotis semi-antiqua and Rotis antiqua-altogether 17 font styles; while former design professor Oliver Klimpe examines Rotis the place from today's globalized perspective: of a different ecological and political era, off the beaten track yet privileged, in the heart of West Germany. otl aicher / rotis is published in anticipation of the hundredth anniversary of Aicher's birth in 2022.