the publishing catalogue comprises around 1500 Urtext editions and some 750 scholarly publications, making it the world's leading publisher of Urtext music editions. In 1955, the staff relocated to a newly acquired publishing house at Schongauer Strasse 24; 23 years later, in 1978, the publishing house acquired its present offices at Forstenrieder Allee 122 in Munich. The following year (1979), Günter Henle died, leading to the closure of the Duisburg offices and the expansion of the Munich subsidiary. In 1993, an upper floor was added to the building; in 2005 the ground floor was modernised. The first managing director of the publishing house, alongside Günter Henle, was Friedrich Joseph Schaefer (1907–1981). He was succeeded in 1969 by Martin Bente (born 1936), first as commercial manager in the Munich branch, then from 1979 as managing director and head of publishing. In 2000, Wolf-Dieter Seiffert (born 1959) was appointed managing director and head of publishing. He had been chief editor or editor of the publishing house since 1990. The academic editing department plays a central role at the Henle publishing house. All Urtext editions are subject to strict scholarly and aesthetic criteria with regard to source and text criticism, correctness, beauty and user-friendly presentation of the music (pagination, fingerings etc.), as well as in terms of the stringency and comprehensibility of the prefaces and the critical apparatus. The following musicologists with doctorates have shaped or continue to shape the Urtext profile of the publishing house: Ewald Zimmermann (1910–1998), from 1953–1975 (also director of the Duisburg publishing office) (see also); Ernst Herttrich (born 1942) from 1970 to 1990; Ernst-Günter Heinemann (born 1945) from 1978 to 2010; Wolf-Dieter Seiffert (born 1959) from 1990 to 2000; Norbert Gertsch (born 1967) since 1997 (from 2009 at the same time deputy head of publishing and programme director); Norbert Müllemann (born 1976) since 2008 (chief editor since 2017). In 1972 Günter Henle founded Günter Henle Stiftung München [the Günter Henle Foundation, Munich], which later became the owner of the publishing house. The Foundation was initially chaired by Henle himself and, after his death, by Walter Keim (1979–1981); he was followed by Anne Liese Henle, wife of Günter Henle (1981–1994) and C. Peter Henle (born 1938), son of Günter and Anne Liese Henle from 1994 to 2016. Since 2016 Felix Henle (born 1968), son of C. Peter Henle, has been Chairman of the Board of the Foundation. With the