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Metadata is partially provided by SLUB Dresden / Deutsche Fotothek
Permalinks to the original data source (with lower image resolution) and additional metadata information are provided here:

Hofkirche/
	Triple_1/
		1.tif - Permalink: http://www.deutschefotothek.de/documents/obj/90075300
			Originator: Walter Mbius
			Date: 1959
			License: CC-BY-SA
		2.tif - Permalink: http://www.deutschefotothek.de/documents/obj/90075229
			Originator: Manfred Thonig
			Date: 1967
			License: CC-BY-SA
		3.tif - Permalink: http://www.deutschefotothek.de/documents/obj/90075173
			Originator: Walter Mbius
			Date: 1937
			License: CC-BY-SA

	Triple_2/
		1.tif - Permalink: http://www.deutschefotothek.de/documents/obj/32022559
			Originator: Walter Mbius
			Date: 1928
			License: CC-BY-SA
		2.tif - Permalink: http://www.deutschefotothek.de/documents/obj/70044648
			Originator: Walter Mbius
			Date: 1930
			License: CC-BY-SA
		3.tif - Permalink: http://www.deutschefotothek.de/documents/obj/87713755
			Originator: Walter Mbius
			Date: 1949
			License: CC-BY-SA

Moritzburg/
	Triple_1/
		1.tif - Permalink: http://www.deutschefotothek.de/documents/obj/71287402
			Originator: Walter Mbius
			Date: before 1945
			License: CC-BY-SA
		2.tif - Permalink: http://www.deutschefotothek.de/documents/obj/90084488
			Originator: Freimund Edlich
			Date: 1884
			License: CC-BY-SA
		3.tif - Permalink: http://www.deutschefotothek.de/documents/obj/71287401
			Originator: Walter Mbius
			Date: 1931
			License: CC-BY-SA

	Triple_2/
		1.tif - Permalink: http://www.deutschefotothek.de/documents/obj/33087961
			Originator: Walter Mbius
			Date: 1939
			License: CC-BY-SA
		2.tif - Permalink: http://www.deutschefotothek.de/documents/obj/33087785
			Originator: Manfred Thonig
			Date: 1969
			License: CC-BY-SA
		3.tif - Permalink: http://www.deutschefotothek.de/documents/obj/33087787
			Originator: Walter Mbius
			Date: 1928
			License: CC-BY-SA

Semperoper/
	Triple_1/
		1.tif - Permalink: http://www.deutschefotothek.de/documents/obj/90092293
			Originator: Siegfried Bregulla
			Date: 1992
			License: CC-BY-SA
		2.tif - Permalink: http://www.deutschefotothek.de/documents/obj/72076765
			Originator: Siegfried Bregulla
			Date: 1992
			License: CC-BY-SA
		3.tif - Permalink: http://www.deutschefotothek.de/documents/obj/72076766
			Originator: Siegfried Bregulla
			Date: 1992
			License: CC-BY-SA

	Triple_2/
		1.tif - Permalink: http://www.deutschefotothek.de/documents/obj/80653861
			Originator: Rudolph Tamme
			Date: after 1877
			License: CC-BY-SA
		2.tif - Permalink: http://www.deutschefotothek.de/documents/obj/80102161
			Originator: Walter Mbius
			Date: 1929
			License: CC-BY-SA
		3.tif - Permalink: http://www.deutschefotothek.de/documents/obj/90032868
			Originator: Hermann Krone
			Date: after 1878
			License: CC-BY-SA

Zwinger/
	Triple_1/
		1.tif - Permalink: http://www.deutschefotothek.de/documents/obj/71058420
			Originator: Walter Mbius
			Date: 1930
			License: CC-BY-SA
		2.tif - Permalink: http://www.deutschefotothek.de/documents/obj/71058422
			Originator: Walter Mbius
			Date: 1930
			License: CC-BY-SA
		3.tif - Permalink: http://www.deutschefotothek.de/documents/obj/71058440
			Originator: Walter Mbius
			Date: 1937
			License: CC-BY-SA

	Triple_2/
		1.tif - Permalink: http://www.deutschefotothek.de/documents/obj/71058413
			Originator: Gerhard Dring
			Date: 1965
			License: CC-BY-SA
		2.tif - Permalink: http://www.deutschefotothek.de/documents/obj/80653691
			Originator: Rudolph Tamme
			Date: around 1880
			License: CC-BY-SA
		3.tif - Permalink: http://www.deutschefotothek.de/documents/obj/71058402
			Originator: Walter Mbius
			Date: 1937
			License: CC-BY-SA