Halberstadt - Hohenholte
- Halberstadt
Cathedral Treasury
Gymnasium Library (Historical Collection)
City Archive
- Halle (Saale)
Francke Foundations
St. Mary's Library
University and State Library
- Haltern (see Specials: Manuscript Census Westphalia)
City Archive
- Hamburg
Library of the Christianeum
Commercial Library
State and University Library
- Hanover
Main State Archives
Kestner Museum
State Library (Gottfried Wilhelm Leibniz Library)
Regional Church Archive
City Archive
City Library
- Harsewinkel (see Specials: Handschriftencensus Westfalen)
St. Lucia
- Havelberg (see Specials: Eastern Federal States)
Cathedral Archive
- Heek (see Specials: Manuscript Census Westphalia)
St. Ludgerus
- Heidelberg
University Library
- Helmstedt (see HAB Wolfenbüttel)
- Herford (see Specials: Manuscript Census Westphalia)
Municipal Archives
- Hervest-Dorsten (see Specials: Handschriftencensus Westfalen)
St. Paul
- Hildesheim
Cathedral Library
Cathedral treasure
(Old) City Library, today in the Scientific Library of the City Archive
City Archive
- Hirzenhain, Hofgut Luisenlust (see Wernigerode)
- Court
Council Library
- Hohenholte (see Specials: Handschriftencensus Westfalen)
St. Georg
