Public Domain Calendar & Archive

Name: Public Domain Calendar & Archive
Creator: Old Post Books
License: Open Library records may combine sources; record-level provenance and applicable rights statements are retained.

Public Domain Calendar & Archive organizes records from Open Library APIs and data into a static table for transparent comparison. It preserves official source links and dates, marks missing enrichment, and adds deterministic grouping, change, recency, trend, or significance fields only where the documented inputs support them, without recommendations or unsupported claims.

Records: 5,000
Last changed: 08/30/2026
Update schedule: 51 13 * * 5 UTC
Coverage: 01/17/1970–01/21/1970
Method: Methodology

Record	Record Date	Vuga Group	Change Status	Recency Days	Public Significance Score
A Tramp Abroad	01/21/1970	public	increased	20,674.76	100
The Adventures of Tom Sawyer	01/21/1970	public	increased	20,674.56	100
Life on the Mississippi	01/21/1970	public	increased	20,674.55	100
The Prince and the Pauper	01/21/1970	public	increased	20,674.55	100
Tom Sawyer Abroad, Tom Sawyer Detective and Other Stories Etc. Etc.	01/21/1970	public	increased	20,674.67	100
The Mysterious Stranger and Other Stories (7 works)	01/21/1970	public	increased	20,674.69	100
A Connecticut Yankee in King Arthur's Court	01/21/1970	public	increased	20,674.68	100
The Innocents Abroad	01/21/1970	public	increased	20,674.55	100
The Tragedy of Pudd'nhead Wilson	01/21/1970	public	increased	20,674.56	100
Roughing It	01/21/1970	public	increased	20,674.65	100
The Autobiography of Mark Twain	01/21/1970	public	increased	20,674.76	100
A Double Barrelled Detective Story	01/21/1970	public	increased	20,674.72	100
Following the Equator	01/21/1970	public	increased	20,674.66	100
Le Diable amoureux	01/21/1970	public	increased	20,674.57	100
Tom Sawyer, Detective	01/21/1970	public	increased	20,674.67	100
Christian Science	01/21/1970	public	increased	20,674.67	100
The American Claimant	01/21/1970	public	increased	20,674.73	100
Personal Recollections of Joan of Arc	01/21/1970	public	increased	20,674.55	100
The Mysterious Stranger	01/21/1970	public	increased	20,674.76	100
Treaties, etc	01/21/1970	no_ebook	increased	20,674.56	100
Recueil des actes de Louis VI, roi de France (1108-1137)	01/21/1970	public	increased	20,674.56	100
Albrecht Dürer	01/21/1970	borrowable	increased	20,674.57	100
A handbook of ornament with 300 plates containing about 3,000 illustrations of the elements, and the application of decoration to objects	01/21/1970	public	increased	20,674.66	100
English without tears	01/21/1970	no_ebook	increased	20,674.8	100
The pursuit of God	01/21/1970	public	increased	20,674.68	100
Goya	01/21/1970	public	increased	20,674.62	100
Sidereus nuncius	01/21/1970	public	increased	20,674.59	100
What I Saw In California	01/21/1970	public	increased	20,674.66	100
Rembrandt	01/21/1970	public	increased	20,674.64	100
A Sanskrit reader	01/21/1970	public	increased	20,674.76	100
Quaestiones disputatae de veritate	01/21/1970	no_ebook	increased	20,674.69	100
Catena aurea	01/21/1970	public	increased	20,674.66	100
De ente et essentia	01/21/1970	borrowable	increased	20,674.64	100
Summa contra gentiles	01/21/1970	public	increased	20,674.62	100
Kleopatra	01/21/1970	public	increased	20,674.62	100
Eine aegyptische Königstochter	01/21/1970	public	increased	20,674.55	100
Old Indian legends	01/21/1970	public	increased	20,674.63	100
American Indian Stories	01/21/1970	public	increased	20,674.55	100
Who Paid the Piper?	01/21/1970	borrowable	increased	20,674.57	100
Penrod	01/21/1970	public	increased	20,674.71	100
Penrod and Sam	01/21/1970	public	increased	20,674.69	100
The Magnificent Ambersons	01/21/1970	public	increased	20,674.72	100
Alice Adams	01/21/1970	public	increased	20,674.56	100
The Book of Signs	01/21/1970	borrowable	increased	20,674.66	100
America	01/21/1970	public	increased	20,674.66	100
Adolphe	01/21/1970	public	increased	20,674.63	100
Cyrano de Bergerac	01/21/1970	public	increased	20,674.58	100
The principles of equity	01/21/1970	public	increased	20,674.63	100
The Gadfly	01/21/1970	public	increased	20,674.62	100
Чайка	01/21/1970	public	increased	20,674.57	100