| title | creator | language | description | tableOfContents | contributor | subject | created |
| Evolution
An Investigation and a Critique | Graebner, Theodore, 1876-1950 | en | | | | | 2006-09-18 |
| An Investigation into the Nature of Black Phthisis
or Ulceration Induced by Carbonaceous Accumulation in the
Lungs of Coal Miners | Makellar, Archibald | en | | | | Miners' phthisis; Lungs -- Dust diseases; Coal miners -- Diseases; Miners -- Diseases; Occupational diseases | 2007-06-23 |
| Medical Investigation in Seventeenth Century England
Papers Read at a Clark Library Seminar, October 14, 1967 | | en | | | | Boyle, Robert, 1627-1691; Embryology -- England -- History -- 17th century | 2009-09-18 |
| The Communes of Lombardy from the VI. to the X. Century
An Investigation of the Causes Which Led to the Development
Of Municipal Unity Among the Lombard Communes. | Williams, William Klapp | en | | | | | 2004-04-01 |
| 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 |
| A Theory of Creation: A Review of 'Vestiges of the Natural History of Creation' | Bowen, Francis, 1811-1890 | en | | | | Evolution (Biology); Chambers, Robert, 1802-1871. Vestiges of the natural history of creation; Creation | 2008-02-19 |
| An Expository Outline of the "Vestiges of the Natural History of Creation"
With a Notice of the Author's "Explanations:" A Sequel to the Vestiges | Anonymous | en | | | | | 2006-06-06 |
| Archeological Investigations
Bureau of American Ethnology, Bulletin 76 | Fowke, Gerard, 1855-1933 | en | | | | Hawaiians; Indians of North America; Missouri -- Antiquities; United States -- Antiquities; Hawaii -- Antiquities | 2006-07-28 |
| Vestiges of the Mayas
or, Facts Tending to Prove that Communications and Intimate
Relations Must Have Existed, in very Remote Times, Between
the Inhabitants of Mayab and Those of Asia and Africa | Le Plongeon, Augustus, 1826-1908 | en | | | | Mayas; Indians -- Origin; Yucatán Peninsula -- Antiquities | 2009-12-25 |
| Federal Bureau of Investigation FOIA Documents - Unidentified Flying Objects | United States. Federal Bureau of Investigation | en | These records were released under the United States Freedom of Information Act. | | | | 2008-06-05 |
| An Apology for Atheism
Addressed to Religious Investigators of Every Denomination
by One of Its Apostles | Southwell, Charles | en | | | | | 2005-08-11 |
| Martin Hewitt, Investigator | Morrison, Arthur, 1863-1945 | en | | The Lenton Croft robberies -- The loss of Sammy Crockett -- The case of Mr. Foggatt -- The case of the Dixon torpedo -- The Quinton jewel affair -- The Stanway cameo mystery -- The affair of the tortoise. | | Detective and mystery stories, English; Private investigators -- England -- Fiction | 2004-02-01 |
| The Red Triangle
Being Some Further Chronicles of Martin Hewitt, Investigator | Morrison, Arthur, 1863-1945 | en | | The affair of Samuel's diamonds -- The case of Mr. Jacob Mason -- The case of the Lever Key -- The case of the burnt barn -- The case of the Admiralty code -- The adventure of Channel Marsh. | | Private investigators -- Fiction; Detective and mystery stories, English | 2009-02-14 |
| The Science of Fingerprints
Classification and Uses | United States. Federal Bureau of Investigation | en | | | Hoover, J. Edgar (John Edgar), 1895-1972 [Contributor] | | 2006-08-10 |
| Harvard Psychological Studies, Volume 1
Containing Sixteen Experimental Investigations from the Harvard Psychological Laboratory. | Various | en | | | Münsterberg, Hugo, 1863-1916 [Editor] | | 2005-07-12 |
| Preliminary Report of the Commission Appointed by the University of Pennsylvania to Investigate Modern Spiritualism
In Accordance with the Request of the Late Henry Seybert | Seybert Commission, The | en | | | | | 2004-04-01 |
| Ashton-Kirk, Investigator | McIntyre, John T. | en | | | | | 2004-05-01 |