D. German Business Correspondence and Papers Waldburg Papers. Vols. cxxii-cxliv. Correspondence and papers relating to Frederika's business concerns in Germany, including properties in Berlin, Baden Baden and Tiefenbach; 1932-1983, n.d. Mostly German. Twenty three volumes.
Waldburg Papers. Vols. cxxii, cxxiii. Correspondence and papers of Delbruck Schickler, stockbrokers, concerning shares and other financial matters; 1932-1971, n.d. See also Add. 73063. Two volumes.
Waldburg Papers. Vols. cxxviii-cxxx. Correspondence and papers of Allgauer Treuhand, chartered accountants, relating to taxes, properties and other financial business; 1949-1979. See also Add. 73032-73035, Add. 73039, Add. 73044, art. 1. Three volumes.
Waldburg Papers. Vols. cxxxi, cxxxii. Correspondence and papers of Berliner Aktiengesellschaft für Industriebeteiligungen, mainly between Dr. Elly Bock and Frederika; 1949-1979. See also Add. 73032-73038. Two volumes.
Waldburg Papers. Vols. cxxiv-cxxvii. Correspondence and papers of Alfred Stockmann and Co., estate agents and property managers; 1943-1971. See also Add. 73036-73038 and Add. 73041, art. 1. Four volumes.
Waldburg Papers. Vol. cxxxiii (ff. ). Correspondence and papers relating mainly to property in Baden Baden; 1953-1959. Contents: 1. ff. . Correspondence and papers of Dr.Joachim Sack, lawyer; 1953-1954. See also Add. 73047, art. 1. 2. ff. . Correspondence and papers of Dr Rolf Siegl, lawyer; ...
Waldburg Papers. Vols. cxxxiv, cxxxv. Correspondence and papers of Dr Nath, lawyer, mostly relating to property; 1957-1960. See also Add. 73038. Two volumes.
Waldburg Papers. Vol. cxxxvii (ff. ). Correspondence and papers of Kurt Henn, accountants, concerning the management of, and income from, the Baden Baden properties. Also statements of accounts, showing the properties' incomings and outgoings; 1971-1979, n.d. See also Add. 73046.
Waldburg Papers. Vols. cxl, cxli. Correspondence and papers involving Frederika and various lawyers, bankers, estate agents etc., regarding the finance and administration of the Waldburg estate. Includes inventories, a deed of sale and a court action. Most relates to the sale of Berg Villa. See also Add. 73042, 73043, Add. 73050-73052. Two volumes.