Letter Books - Indexed Series - #1-1449
- CHUR #141 Correspondent : Twombly, Walter M. 4p (5)
- CHUR #142 Correspondent : Dispatches 9p (5)
- CHUR #143 Correspondent : D. Appleton and Company 7p (5)
- CHUR #144 Correspondent : First National Bank of Chicago- John J. Arnold, (5) Frank O. Wetmore 33p (5)
- CHUR #145 Correspondent : Walsh, David I. 7p (5)
- CHUR #146 Correspondent : Allen, Edwin Wood 5p (5)
- CHUR #147 Correspondent : Anderson, Cyrus 7p (5)
- CHUR #148 Correspondent : American Surety Company of New York- Edward D. Sadler 3p (5)
- CHUR #149 Correspondent : Bramleykite 28p (5)
- CHUR #150 Correspondent : Bowen, R.D. 20p (5)
- CHUR #151 Correspondent : New WillardHotel 5p (5)
- CHUR #152 Correspondent : Blythe, Samuel G. 8p (5)
- CHUR #153 Correspondent : Buckley, Amby J. 3p (5)
- CHUR #154 Correspondent : Nuton, P.J. 6p (5)
- CHUR #155 Correspondent : Busse, Fred 2p (5)
- CHUR #156 Correspondent : Burt, Louise 8p (5)
- CHUR #157 Correspondent : United Spanish War Veterans- Henry W. Busch 3p (5)
- CHUR #158 Correspondent : Slater, E.H. 6p (5)
- CHUR #159 Correspondent : Butler, Charles Henry 3p (5)
- CHUR #160 Correspondent : Butler, Mike H. 7p (5)
- CHUR #161 Correspondent : Butler, Morgan 3p (5)
- CHUR #162 Correspondent : Butterworth, William 2p (5)
- CHUR #163 Correspondent : Brandeis, Louis D. 2p (5)
- CHUR #164 Correspondent : Budd, Samuel 3p (5)
- CHUR #165 Correspondent : Buker, J.E. 2p (5)
- CHUR 1/06 Folder : Letter Book 6 - Letters #166-190
- CHUR #166 Correspondent : Burns, Helen Stanton 23p (6)
- CHUR #167 Correspondent : Butler, Howard W. 13p (6)
- CHUR #168 Correspondent : General Electric Company- Anson W. Burchard, G.E. Emmons, (6) Langdon Gibson, B.M. Eoff, H.L.R. Emmet, F.S. Hunting, (6) S.M. Moore, H.L. Monroe, Margaret V. Monroe, (6) C.E. Patterson, James J. Wood, J.W. Elwood, (6) E.W. Rice, Jr., Owen D. Young 130p (6)
- CHUR #169 Correspondent : Butler, Mrs. Paul E. 10p (6)
- CHUR #170 Correspondent : Immaculate Conception Church,- Camden, N.J.- (6) Rev. Francis J. McCallon 3p (6)
- CHUR #171 Correspondent : Ewing, D.L. 6p (6)
- CHUR #172 Correspondent : Elliott, E.M. 3p (6)
- CHUR #173 Correspondent : Callaghan, James F. 5p (6)
- CHUR #174 Correspondent : Carry, William 2p (6)
- CHUR #175 Correspondent : Meehan, W.B. 3p (6)
- CHUR #176 Correspondent : Hocking Valley Railway Company- M.J. Caples 2p (6)
- CHUR #177 Correspondent : Capper, Arthur 2p (6)
- CHUR #178 Correspondent : Newberry Library- W.N.C. Carlton 4p (6)
- CHUR #179 Correspondent : Northwestern Trading Company- Otto Carmichael 4p (6)
- CHUR #180 Correspondent : Robert Treat- Charles A. Carrigan 3p (6)
- CHUR #181 Correspondent : Sullivan, Roger C. 36p (6)
- CHUR #182 Correspondent : Carpenter, Frank G. 2p (6)
- CHUR #183 Correspondent : The Bon Marche- Melvin W. Cassmore 3p (6)
- CHUR #184 Correspondent : Castle Charles C. 3p (6)
- CHUR #185 Correspondent : Wineman, Sim 3p (6)
- CHUR #186 Correspondent : Parlin and Orendorff Company- G.L. Duval 6p (6)
- CHUR #187 Correspondent : Wessel, Duval and Company- Jose Canals 3p (6)
- CHUR #188 Correspondent : Caras y Caretas- Jose Canals 3p (6)
- CHUR #189 Correspondent : Louisville Varnish Company- P.H. Callahan 17p (6)
- CHUR #190 Correspondent : Carlile, William B. 9p (6)
- CHUR 1/07 Folder : Letter Book 7 - Letters #191-220
- CHUR #191 Correspondent : Carr, Clyde M. 3p (7)
- CHUR #192 Correspondent : University of Notre Dame- Rev. John Cavanaugh, (7)
- CHUR #192 Correspondent : Rev. John F. O'Hara 79p (7)
- CHUR #193 Correspondent : Kiangnan Dock and Engineering Works- R.B. Mauchan, K.N. Lew,
- CHUR #193 Correspondent : K.N. Kwong 21p (7)
- CHUR #194 Correspondent : 20th Century Press Clipping Bureau- C.J. Spitzer 8p (7)
- CHUR #195 Correspondent : Chadbourne, Thomas L. 4p (7)
- CHUR #196 Correspondent : Chicago and Alton Railroad Company- W.G. Bierd 3p (7)
- CHUR #197 Correspondent : Chicago Daily News- Julius Wood 6p (7)
- CHUR #198 Correspondent : Republic of China- R.S. Sen 2p (7)
- CHUR #199 Correspondent : Chicago Surface Lines- Henry A. Blair 7p (7)
- CHUR #200 Correspondent : Chamber of Commerce of the United States of America- (7) E.H. Goodwin, R.G. Rhett 24p (7)
- CHUR #201 Correspondent : Chamberlain, George E. 3p (7)
- CHUR #202 Correspondent : NationalPetroleum Association- C.D. Chamberlin 5p (7)
- CHUR #203 Correspondent : Ontario Wind Engine and Pump Company- S.H. Chapman 5p (7)
- CHUR #204 Correspondent : Cheny, Howard 2p (7)
- CHUR #205 Correspondent : Channon, James H. 2p (7)
- CHUR #206 Correspondent : Christian Science Monitor- Roy L. Harvey, Frederick Dickson 7p
- CHUR #207 Correspondent : Children's Hospital- Washington- C. Estes 3p (7)
- CHUR #208 Correspondent : Chisholm 2p (7)
- CHUR #209 Correspondent : Eaton, Charles A. 4p (7)
- CHUR #210 Correspondent : Chicago Telephone Company 2p (7)
- CHUR #211 Correspondent : Chicago Burlington and Quincy Railroad Company- Clarence S. Ward 2p
- CHUR #212 Correspondent : Chicago Examiner- A.H. Messing 5p (7)
- CHUR #213 Correspondent : Chicago Golf Club- Addison Stillwell 6p (7)
- CHUR #214 Correspondent : Claffey, Thomas H. 7p (7)
- CHUR #215 Correspondent : Kroning, Julius 3p (7)
- CHUR #216 Correspondent : El Paso Club- Bruce E. Clark 5p (7)
- CHUR #217 Correspondent : Clark and Rainer- J. Milton Trainer 8p (7)
- CHUR #218 Correspondent : Clarke Brothers and Company- R.D. Clarke 7p (7)
- CHUR #219 Correspondent : Lackawanna Steel Company- E.A.S. Clarke 8p (7)
- CHUR #220 Correspondent : Clinedinst Studio- N.M. Lindsey 5p (7)
- CHUR 1/08 Folder : Letter Book 8 - Letters #221-250
- CHUR #221 Correspondent : Interstate Commerce Commission- E.E. Clark, Charles C. McChord 4p
- CHUR #222 Correspondent : Bailey, R.H. 14p (8)
- CHUR #223 Correspondent : Automobile Insurance Company- Joe H. Clingenpeel 2p (8)
- CHUR #224 Correspondent : Clemenceau, Georges 2p (8)
- CHUR #225 Correspondent : Chevy Chase Club- H. Prescott Gatley and James H. Hayden 23p (8)
- CHUR #226 Correspondent : Clarke, Arthur 4p (8)
- CHUR #227 Correspondent : Cook, F.H. 2p (8)
- CHUR #228 Correspondent : Commonwealth of Pennsylvania- William C. Sproul 2p (8)
- CHUR #229 Correspondent : Crary, Gifford B. 5p (8)
- CHUR #230 Correspondent : Peabody, Augustus S. 6p (8)
- CHUR #231 Correspondent : Collins, Richard J. 2p (8)
- CHUR #232 Correspondent : Columbiad Publishing Company- J.B. Kennedy 3p (8)
- CHUR #233 Correspondent : Federal Trade Commission- William B. Colver, William J. Harris,
- CHUR #233 Correspondent : L.L. Bracken, John Franklin Fort, John Walsh, C.G. Duganne,
- CHUR #233 Correspondent : William Notz 56p (8)