| Imperial 109 | Doyle, Richard | "Fiction - Adventure"
| 401 | | 5 | 1990-10-14 |
| Impollutable Pogo | Kelly, Walt | "Humor"
| 128 | 1970 | 7 | |
| Importance of Being Earnest, The | Wilde, Oscar | "Drama"
| 135 | 1895 | 7 | 1993-09-07 |
| In a Dark Wood | Cadnum, Michael | "Fiction - Adventure"
| 246 | 1998 | 8 | 2003-01-11 |
| In a Lonely Place | Hughes, Dorothy B. | "Fiction - Mystery"
| 198 | 1947 | 5 | 2021-04-10 |
| In a Narrow Grave | McMurtry, Larry | "Literature/Essays"
| 173 | 1968 | 6 | 2023-03-29 |
| In a Sunburned Country | Bryson, Bill | "Travel"
| 304 | 2000 | 8 | 2007-10-01 |
| In Dubious Battle | Steinbeck, John | "Fiction - Historical"
| 250 | 1936 | 5 | 1997-02-04 |
| In God We Trust: All Others Pay Cash | Shepherd, Jean | "Autobiographies, Memoirs and Biographies"
| 264 | 1966 | 6 | 2015-02-14 |
| In Mortal Combat | Toland, John | "World History - Military"
| 596 | 1991 | 7 | 1998-09-13 |
| In Search of England | Morton, H.V. | "Literature/Essays"
| 314 | 1935 | 7 | 1999-11-29 |
| In Search of the World's Worst Writers | Page, Nick | "Literature/Essays"
| 288 | 2000 | 7 | 2001-11-29 |
| In the Garden of Iden | Baker, Kage | "Fiction - S. F./Fantasy"
| 329 | 1997 | 5 | 2004-05-21 |
| In the Hands of Providence | Trulock, Alice Rains | "U.S. History - Military"
| 381 | 1992 | 7 | 1997-08-08 |
| In the Hands of the Senecas | Edmonds, Walter D. | "Fiction - Historical"
| 213 | 1937 | 9 | 1995-10-17 |
| In the Heart of the Sea | Philbrick, Nathaniel | "Crime and Disaster (non-fiction)"
| 238 | 2000 | 8 | 2001-08-24 |
| In the Heat of the Night | Ball, John | "Fiction - Mystery"
| 184 | 1965 | 6 | 2006-09-23 |
| In the Heavenlies | Ironside, H.A. | "Theology"
| 341 | 1937 | 6 | 2015-10-24 |
| In the Hurricane's Eye | Philbrick, Nathaniel | "U.S. History - Military"
| 280 | 2018 | 6 | 2019-11-20 |
| In the Land of the White Death | Albanov, Valerian | "Travel"
| 196 | 1917 | 7 | 2010-02-13 |
| In the Midst of Life | Bierce, Ambrose | "Fiction - Short Story Collection"
| 192 | 1892 | 8 | 1996-03-02 |
| In the Neighborhood | Lovenheim, Peter | "Reference/Miscellaneous"
| 236 | 2010 | 7 | 2025-08-13 |
| In the Reign of Terror | Henty, G.A. | "Fiction - Historical"
| 238 | 1887 | 6 | 2006-07-30 |
| In the Wet | Shute, Nevil | "Fiction - General"
| 280 | 1953 | 6 | 1988-09-22 |
| In Trouble Again | O'Hanlon, Redmond | "Travel"
| 258 | 1988 | 6 | 2015-10-09 |
| In Tuscany | Mayes, Frances | "Travel"
| 265 | 2000 | 6 | 2007-09-04 |
| In Your Dreams | Holt, Tom | "Fiction - S. F./Fantasy"
| 450 | 2004 | 6 | 2022-10-15 |
| Inca Gold | Cussler, Clive | "Fiction - Adventure"
| 541 | 1994 | 8 | 1995-01-09 |
| Incidents of Travel in the Yucatan | Stephens, John Lloyd | "Travel"
| 280 | 1843 | 6 | 2015-03-10 |
| Incompleat Pogo, The | Kelly, Walt | "Humor"
| 187 | 1954 | 7 | |
| Incredible Journey, The | Burnford, Sheila | "Fiction - Chapter Books"
| 145 | 1960 | 8 | 2003-03-10 |
| Incredible World of 007, The | Pfeiffer, Philip Lisa and Lee | "Arts and Entertainment"
| 224 | 1992 | 6 | 1993-12-09 |
| Incredulity of Father Brown, The | Chesterton, G.K. | "Fiction - Mystery"
| 197 | 1926 | 8 | 1996-10-07 |
| Indian Drums and Broken Arrows | Massey, Craig | "Fiction - Chapter Books"
| 191 | 1958 | 9 | 2009-01-26 |
| Indian in the Cupboard, The | Banks, Lynne Reid | "Fiction - Chapter Books"
| 181 | 1980 | 8 | 2000-01-12 |
| Inferno | Alighieri, Dante | "Fiction - S. F./Fantasy"
| 307 | 1314 | 4 | |
| Influence of Sea Power Upon History, The | Mahan, Alfred Thayer | "World History - Military"
| 482 | 1890 | 7 | 1989-08-13 |
| Ingredients | Zaidan, George | "Nature/Science"
| 282 | 2020 | 7 | 2024-06-06 |
| Inherit the Wind | Lawrence & Robert E. Lee, Jerome | "Drama"
| 115 | 1955 | 7 | 1997-03-13 |
| Inimitable Jeeves, The | Wodehouse, P.G. | "Fiction - Short Story Collection"
| 224 | 1923 | 7 | 1994-03-27 |
| Innocence of Father Brown, The | Chesterton, G.K. | "Fiction - Mystery"
| 304 | 1911 | 8 | 1994-12-22 |
| Innocents Abroad, The | Twain, Mark | "Travel"
| 429 | 1869 | 8 | 1998-01-09 |
| Insane City | Barry, Dave | "Fiction - Humorous Novels"
| 341 | 2013 | 7 | 2015-09-22 |
| Inside Lincoln's White House | Hay, John | "U.S. History - Political"
| 254 | 1997 | 6 | 1999-08-29 |
| Inside Mayberry | Habeeb, Dan Harrison and Bill | "Arts and Entertainment"
| 282 | 1994 | 5 | 2020-03-09 |
| Inside the Atom | Asimov, Isaac | "Nature/Science"
| 216 | 1956 | 7 | 1987-11-30 |
| Inside the Tower | Bartholomew, James | "World History - Political"
| 127 | 1990 | 7 | 1995-04-02 |
| Instant It Happened, The | Associated Press, The | "World History - Cultural"
| 239 | 1975 | 8 | 2001-03-11 |
| Instant Pogo | Kelly, Walt | "Humor"
| 127 | 1959 | 7 | |
| Interesting Times | Pratchett, Terry | "Fiction - S. F./Fantasy"
| 295 | 1994 | 6 | 2010-04-16 |
