1821-1871 1821-1891 1854-1926 1855-1940 1888-1945 1904-1986 1910- 1925- 1955- africanamericanartists baird biography cataloguesraisonnéspippin christianheinrich christoph construction criticismandinterpretationpippin exhibitions friedrich gebrüderlinkorgelbaumeister(firm) germany giengenanderbrenz gmbh greatbritain hermannwerner history historyorgelbaulink horace inventors johann johnlogie link linkfamily naacke organ(musicalinstrument) organbuilders orgelbaulink paul rheinhold schmid scotland television waltraud wilhelmeugen