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The Prince-Bishopric of Speyer, formerly known as Spires in English, (German: Hochstift Speyer, Fürstbistum Speyer, Bistum Speyer) was an ecclesiastical
February 29, 2016 "Bischöfe". Home page of the Diocese of Speyer (in German). Bistum Speyer. 2003. Archived from the original on 2006-03-29. Retrieved
History of Speyer
Stadt Speyer, Vol. 1, 1982, Kohlhammer Verlag, Stuttgart, ISBN 3-17-007522-5, pp. 118–144 Bistum Speyer (Bishopric Speyer) Geschichte der Stadt Speyer, Vol
The Diocese of Speyer (Latin: Dioecesis Spirensis) is a Latin diocese of the Catholic Church in Germany. The diocese is located in the South of the Rhineland-Palatinate
Schlembach; Speyer: Pilger-Verlag, 2007; ISBN 3-87637-082-5 "Bistum Speyer - Bischof Dr. Karl-Heinz Wiesemann". Homepage of the Diocese of Speyer (in German)