| title | creator | language | description | tableOfContents | contributor | subject | created |
| America To-day, Observations and Reflections | Archer, William, 1856-1924 | en | | | | | 2004-07-22 |
| Publications of the Scottish History Society, Volume 36
Journals of Sir John Lauder Lord Fountainhall with His Observations on Public Affairs and Other Memoranda 1665-1676 | Fountainhall, John Lauder, Lord, 1646-1722 | en | | | | France -- Description and travel; Great Britain -- Description and travel; Fountainhall, John Lauder, Lord, 1646-1722 -- Diaries; Judges -- Great Britain -- Diaries | 2004-07-17 |
| Conduct of Sir William Howe
Observations upon the Conduct of S-r W——-m H—e at the White Plains; As Related in The Gazette of December 30, 1776 | Mauduit, Israel, 1708-1787 | en | | | | | 2010-08-16 |
| A Description of Modern Birmingham
Whereunto Are Annexed Observations Made during an Excursion Round the Town, in the Summer of 1818, Including Warwick and Leamington | Pye, Charles, 1777-1864 | en | | | | | 2004-03-01 |
| Fifty Years a Hunter and Trapper
Autobiography, experiences and observations of Eldred
Nathaniel Woodcock during his fifty years of hunting and
trapping. | Woodcock, Eldred Nathaniel | en | | | | | 2010-10-12 |
| A Guide to Methods and Observation in History
Studies in High School Observation | Davis, Calvin Olin | en | | | | | 2007-03-24 |
| Micrographia
Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses with Observations and Inquiries Thereupon | Hooke, Robert, 1635-1703 | en | | | | | 2005-03-29 |
| A Tour of the Missions
Observations and Conclusions | Strong, Augustus Hopkins, 1836-1921 | en | | | | Missions; East Asia -- Description and travel | 2008-12-08 |
| Some Observations on the Ethnography and Archaeology of the American Aborigines | Morton, Samuel George, 1799-1851 | en | | | | | 2009-06-24 |
| Observations on the Mississippi Kite in Southwestern Kansas | Fitch, Henry S., 1909-2009 | en | | | | | 2010-08-12 |
| Observations of an Orderly
Some Glimpses of Life and Work in an English War Hospital | Muir, Ward, 1878-1927 | en | | | | | 2006-02-01 |
| Observations upon the Prophecies of Daniel, and the Apocalypse of St. John | Newton, Isaac, Sir, 1642-1727 | en | | | | | 2005-10-15 |
| Travels in North America, From Modern Writers
With Remarks and Observations; Exhibiting a Connected View
of the Geography and Present State of that Quarter of the
Globe | Bingley, William, 1774-1823 | en | | | | United States -- Description and travel; Mexico -- Description and travel; Canada -- Description and travel | 2009-03-13 |
| Observations and Reflections Made in the Course of a Journey through France, Italy, and Germany, Vol. I | Piozzi, Hester Lynch, 1741-1821 | en | | | | | 2005-08-05 |
| The New Conspiracy Against the Jesuits Detected and Briefly Exposed
with a short account of their institute; and observations
on the danger of systems of education independent of
religion | Dallas, R. C. (Robert Charles), 1754-1824 | en | | | | | 2010-10-03 |
| Guide to Life and Literature of the Southwest, with a Few Observations | Dobie, J. Frank (James Frank), 1888-1964 | en | | | | | 1995-08-01 |
| The Memories of Fifty Years
Containing Brief Biographical Notices of Distinguished Americans, and Anecdotes of Remarkable Men; Interspersed with Scenes and Incidents Occurring during a Long Life of Observation Chiefly Spent in the Southwest | Sparks, William Henry, 1800-1882 | en | | | | | 2005-05-20 |