Public Domain Calendar & Archive
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.
| Record | Record Date | Vuga Group | Change Status | Recency Days | Public Significance Score |
|---|---|---|---|---|---|
| Arrowsmith | 01/21/1970 | public | increased | 20,674.59 | 100 |
| Babbitt | 01/21/1970 | public | increased | 20,674.55 | 100 |
| The house of a thousand candles | 01/21/1970 | public | increased | 20,674.66 | 100 |
| An American dictionary of the English language | 01/21/1970 | public | increased | 20,674.67 | 100 |
| Letters of Emily Dickinson | 01/21/1970 | public | increased | 20,674.83 | 100 |
| The Poems of Emily Dickinson Volume II | 01/21/1970 | public | increased | 20,674.56 | 100 |
| On the origin of species by means of natural selection | 01/21/1970 | public | increased | 20,674.63 | 100 |
| The Autobiography of Charles Darwin | 01/21/1970 | borrowable | increased | 20,674.63 | 100 |
| Charles Darwin's The Voyage of the Beagle: | 01/21/1970 | public | increased | 20,674.6 | 100 |
| The expression of emotions in man and animals | 01/21/1970 | public | increased | 20,674.63 | 100 |
| The life and letters of Charles Darwin | 01/21/1970 | public | increased | 20,674.63 | 100 |
| The different forms of flowers on plants of the same species | 01/21/1970 | public | increased | 20,674.56 | 100 |
| The variation of animals and plants under domestication | 01/21/1970 | public | increased | 20,674.64 | 100 |
| Insectivorous plants | 01/21/1970 | public | increased | 20,674.6 | 100 |
| The structure and distribution of coral reefs | 01/21/1970 | public | increased | 20,674.63 | 100 |
| The descent of man | 01/21/1970 | public | increased | 20,674.64 | 100 |
| Clotel | 01/21/1970 | public | increased | 20,674.56 | 100 |
| Embajada a Tamorlán | 01/21/1970 | public | increased | 20,674.62 | 100 |
| The religions of the ancient world | 01/21/1970 | public | increased | 20,674.68 | 100 |
| A voyage of discovery to the North Pacific Ocean. | 01/21/1970 | public | increased | 20,674.58 | 100 |
| Annales rerum Anglicarum et Hibernicarum regnante Elizabetha | 01/21/1970 | borrowable | increased | 20,674.67 | 100 |
| Κρίτων / Ἀπολογία Σωκράτους | 01/21/1970 | public | increased | 20,674.6 | 100 |
| Κρίτων / Φαίδων / Ἀπολογία Σωκράτους | 01/21/1970 | public | increased | 20,674.63 | 100 |
| Εὐθύδημος | 01/21/1970 | public | increased | 20,674.58 | 100 |
| Εὐθύφρων | 01/21/1970 | public | increased | 20,674.63 | 100 |
| Εὐθύφρων / Κρίτων / Φαίδων / Ἀπολογία Σωκράτους | 01/21/1970 | public | increased | 20,674.59 | 100 |
| Γοργίας | 01/21/1970 | public | increased | 20,674.58 | 100 |
| Λάχης | 01/21/1970 | public | increased | 20,674.62 | 100 |
| Νόμοι | 01/21/1970 | public | increased | 20,674.57 | 100 |
| Παρμενίδης | 01/21/1970 | public | increased | 20,674.57 | 100 |
| Φαίδων | 01/21/1970 | public | increased | 20,674.57 | 100 |
| Φίληβος | 01/21/1970 | public | increased | 20,674.59 | 100 |
| Συμπόσιον | 01/21/1970 | public | increased | 20,674.55 | 100 |
| Φαῖδρος | 01/21/1970 | public | increased | 20,674.55 | 100 |
| Τίμαιος | 01/21/1970 | public | increased | 20,674.58 | 100 |
| Brieven aan zijn broeder | 01/21/1970 | borrowable | increased | 20,674.6 | 100 |
| The letters of Vincent van Gogh | 01/21/1970 | public | increased | 20,674.63 | 100 |
| Vincent van Gogh | 01/21/1970 | borrowable | increased | 20,674.62 | 100 |
| πολιτεία | 01/21/1970 | public | increased | 20,674.55 | 100 |
| Σοφιστής | 01/21/1970 | public | increased | 20,674.66 | 100 |
| Θεαίτητος | 01/21/1970 | public | increased | 20,674.56 | 100 |
| Θεαίτητος / Σοφιστής | 01/21/1970 | public | increased | 20,674.63 | 100 |
| Constant Nymph | 01/21/1970 | public | increased | 20,674.66 | 100 |
| Ἴων | 01/21/1970 | public | increased | 20,674.63 | 100 |
| Κρίτων | 01/21/1970 | public | increased | 20,674.66 | 100 |
| Πρωταγόρας | 01/21/1970 | public | increased | 20,674.55 | 100 |
| Μένων | 01/21/1970 | public | increased | 20,674.62 | 100 |
| Ἀπολογία Σωκράτους | 01/21/1970 | public | increased | 20,674.62 | 100 |
| Popular tales of the west Highlands | 01/21/1970 | public | increased | 20,674.67 | 100 |
| The elixir of life (Auriol) | 01/21/1970 | public | increased | 20,674.58 | 100 |