I
- Illinois Institute of Technology - 12
- Immigrants and immigration - 255, 396
- _____ in papers of individuals - 162, 237, 301, 307, 327, 423
- _____ in records of organizations - 72, 334
- Imposters and imposture United States - 163
- In Memoriam: Bellamy Storer - 294
- Inadequacy of Sensism - 231
- Income United States - 269
- Indiana - 95, 98, 137, 255, 276
- _____ Census - p.18
- _____ Church history Photographs collections - 36
- Indiana Academy - 285
- Indiana American Revolutionary Bicentennial Commission - 442
- Indiana Arts Commission - 285
- Indiana College English Association - 229
- Indiana Commission on State Tax and Financing Policy - 24
- Indiana Foreign Language Teachers Association - 427
- Indiana Liquor Control Board - 108
- Indiana Third Congressional District, The - 24
- Indianapolis (Ind.), Archdiocese of - 73, 98
- Indians of North America - 256
- _____ Indiana - 402, 412
- _____ Languages - 350
- _____ Michigan - 77, 350, 412, p.20
- _____ Missions - 21, 63, 77, 82, 317, 407, 412, 431, 434
- _____ Montana - 243
- _____ New Mexico - 29
- _____ New York - 529
- _____ Prayer-books and devotions - 77
- _____ Removal - 310
- _____ South Dakota - 431
- _____ Texas - 506
- Indulgences - 402, 437
- Industrial Areas Foundation - 468
- Industrial Relations United States Congresses - 188
- Industry and State United States - 252
- Inscriptions - 109, 177
- Institute for World Order - 237
- Institute of Aeronautical Sciences - 545
- Institute of International Education (New York, N.Y.) - 237
- Insurance, Life - 103
- Interamerican Conference of Religious - 127
- Inter-American Press Association - 364
- Intercommunity Justice and Peace Center - p.20
- International Atomic Energy Agency - 192, 237
- International Catholic Migration Commission - 227
- International Committee on English in the Liturgy - 152
- International cooperation - 328, 396
- International Eucharistic Congress (28th : 1926 : Chicago) - 163
- International Federation of Catholic Universities - 237
- International Movement of Catholic Students - 146, 432
- International Poetry Forum - 233
- International relations - 222
- International Typographical Union of North America - 394
- Interracial justice - 13, 23, 238, 308, 323, 357, 360, 424
- Iraq Politics and government - 6
- Ireland, John, 1838-1918 - 9, 96, 193, 253, 261, 278, 381, p.20
- Ireland - 359
- _____ 19th century - 135, 193, 258
- _____ 20th century - 258
- _____ Emigration and immigration - 327
- _____ Foreign relations - 120
- _____ History - 120
- _____ Politics and Government 1910-1921 - 120
- _____ Sinn Fein Rebellion, 1916 - 258
- _____ Social policy - 258
- Irish - 396
- _____ Texas - 506
- Irish Americans - 120, 199, 327
- Irish Brigade, 1861-1865 - 332, 351
- Irish College (Rome, Italy) - 257, 474
- Irish Judiciary, The - 24
- Irish language - 198
- Irish Portraits and Other Poems. Manuscript - 531
- Irish question - 258
- Irish World (New York, N.Y.), The - 193
- Irradiation - 19
- Isabella of Castille, 1492-1892 - 490
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