| title | creator | language | description | tableOfContents | contributor | subject | created |
| Whales, Dolphins, and Porpoises of the Western North Atlantic
A Guide to Their Identification | | en | | | | | 2010-08-25 |
| The Identification of the Writer of the Anonymous Letter to Lord Monteagle in 1605 | | en | | | | Monteagle, William Parker, Baron, 1574 or 5-1622; Gunpowder Plot, 1605 | 2009-08-24 |
| 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 |
| Ducks at a Distance
A Waterfowl Identification Guide | Hines, Robert W. | en | | Identification is Important
What to Look For
Eclipse Plumage
Species Identification:
Puddle Ducks
Mallard
Pintail
Gadwall
Wigeon
Shoveler
Blue-Winged Teal
Cinnamon Teal
Green-Winged Teal
Wood Duck
Black Duck
Diving Ducks
Canvasback
Redheads
Ringneck
Scaup
Goldeneye
Bufflehead
Ruddy
Red-Breasted Merganser
Common Merganser
Hooded Merganser
Whistling Ducks
White-Winged Scoter
Surf Scoter
Black Scoter
Common Eider
Oldsquaw
Harlequin
Swans
Canada Geese
Brant
Snow
White-Fronted Geese
At a Glance Guide
Comparative Sizes Of Waterfowl
Wetlands Attract Wildlife
Administrative Waterfowl Flyways | | Birds; Waterfowl; Anatidae; Ducks | 2006-07-21 |
| The Report on Unidentified Flying Objects | Ruppelt, Edward J., 1922-1960 | en | | | | | 2005-12-18 |
| The Plants of Michigan
Simple Keys for the Identification of the Native Seed
Plants of the State | Gleason, Henry Allan | en | | | | | 2010-04-19 |
| USAF Fact Sheet 95-03
Unidentified Flying Objects and Air Force Project Blue Book | United States. Air Force | en | | | | Project Blue Book (U.S.); Unidentified flying objects | 2008-06-01 |