| title | creator | language | description | tableOfContents | contributor | subject | created |
| A Matter of Importance | Leinster, Murray, 1896-1975 | en | | | | | 2007-11-26 |
| The Mansion of Mystery
Being a Certain Case of Importance, Taken from the Note-book of Adam Adams, Investigator and Detective | Steele, Chester K. | en | | | | | 2005-07-04 |
| The Importance of Being Earnest | Wilde, Oscar, 1854-1900 | en | | | | Drama; Comedies | 1997-03-01 |
| The Importance of the Proof-reader
A Paper read before the Club of Odd Volumes, in Boston, by John Wilson | Wilson, John, 1826- | en | | | | | 2008-12-21 |
| Folkways
A Study of the Sociological Importance of Usages, Manners, Customs, Mores, and Morals | Sumner, William Graham, 1840-1910 | en | | | | | 2008-01-11 |
| A Succinct View of the Importance and Practicability of Forming a Ship Canal across the Isthmus of Panama | Hill, H. R. | en | | | | Canals, Interoceanic; Panama Canal (Panama) | 2009-06-29 |