Heptalogy
A heptalogy is a compound literary or narrative work that is made up of seven distinct works. While not in wide usage, it has been used to describe such examples as the Harry Potter series of books, and The Chronicles of Narnia.
Examples
| Heptalogy | Dates | Author |
| The Cycle of Life | 1914 | Edward Maryon |
| In Search of Lost Time | 1913–1927 | Marcel Proust |
| The Chronicles of Narnia | 1949–1954 | C. S. Lewis |
| Le Livre des questions | 1963–1973 | Edmond Jabès |
| Narratives of Empire | 1967–2000 | Gore Vidal |
| Licht | 1977–2003 | Karlheinz Stockhausen |
| The Death Gate Cycle | 1990–1994 | Margaret Weis & Tracy Hickman |
| Tomorrow series | 1993–1999 | John Marsden |
| Harry Potter | 1997–2007 | J. K. Rowling |
| Planned heptalogy | Dates | Author |
| Luther | 1613–1630 | Martin Rinkart |
| Eugene Gant | 1935–1941 | Thomas Wolfe |
| The Ages of Man | 1956 | Thornton Wilder |
| The Children of Kronos | 1987–1991 | Alexandros Kotzias |
| Heptalogía de Hieronymus Bosch | 1997-2006 | Rafael Spregelburd |
| A Song of Ice and Fire | 1996–20?? | George R. R. Martin |