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Letter from C. C. Parry to Dr. I. A. Lapham | No notes | Completed |
Letter from F. G. Parks to I. A. Lapham and Letter from I. A. Lapham to N. H. Winchell | No notes | Completed |
Letter from I. A. Lapham to N. H. Winchell, Diary Entry, and Chief Geologist Appointment | No notes | Completed |
Letter from J. W. Foster to Mr. Lapham | No notes | Completed |
Letter from I. A. Lapham to C. C. Washburn and Letter from N. H. Winchell to Dr. I. A. Lapham | No notes | Completed |
Letter from I. A. Lapham to B. H. Edgerton and Letter from P. R. Hoy to Dr. Lapham | No notes | Completed |
Letter from I. A. Lapham to Maj. C. B. Comstock | No notes | Completed |
Letter from C. B. Comstock to I. A. Lapham and Letter from T. H. Safford to Dr. I. A. Lapham | No notes | Completed |
Letter from I. A. Lapham to Moses Strong, Letter from J. G. Foster to Maj. C. B. Comstock, and Letter from I. A. Lapham to C. C. Washburn | No notes | Completed |
Letter from I. A. Lapham to W. H. Canfield | No notes | Completed |
Letter from N. H. Winchell to D. I. A. Lapham and Letter from I. A. Lapham to General A. A. Humphreys, p. 1 | No notes | Completed |
p. 2 | No notes | Completed |
Letter from A. A. Humphreys to Dr. I. A. Lapham | No notes | Completed |
p. 1 | No notes | Completed |
p. 2 | No notes | Completed |
Letter from I. A. Lapham to Roland D. Irving and Letter from I. A. Lapham to T. C. Chamberlin, p. 1 | No notes | Completed |
Letter from I. A. Lapham to T. C. Chamberlin, p. 2 and Letter from I. A. Lapham to Moses Strong, p. 1 | No notes | Completed |
Letter from I. A. Lapham to Moses Strong, p. 2 | No notes | Completed |
Letter from I. A. Lapham to Moses Strong, p. 3 and Letter from I. A. Lapham to C. C. Washburn | No notes | Completed |
Letter from Roland Irving to Dr. I. A. Lapham and Letter from A. K. S. Shepard to I. A. Lapham | No notes | Completed |
Letters from John C. Brown to Dr. I. A. Lapham | No notes | Completed |
Letter from John C. Brown to Dr. I. A. Lapham and Letter from I. A. Lapham to A. C. May, p. 1 | No notes | Completed |
Letter from I. A. Lapham to A. C. May, p. 2 | No notes | Completed |
Letter from I. A. Lapham to A. C. May, p. 3, Diary Entry, and Letter from I. A. Lapham to Professor James D. Dans | No notes | Completed |
Letter from George W. Dawson to Dr. I. A. Lapham | No notes | Completed |
On the Relation of The Wisconsin Geological Survey to Agriculture, p. 1 | No notes | Completed |
On the Relation of The Wisconsin Geological Survey to Agriculture, p. 2 | No notes | Completed |
On the Relation of The Wisconsin Geological Survey to Agriculture, p. 3 | No notes | Completed |
On the Relation of The Wisconsin Geological Survey to Agriculture, p. 4 | No notes | Completed |
Letter from George H. Cook to I. A. Lapham and Diary Entries, p. 1 | No notes | Completed |
Diary Entries, p. 2 | No notes | Completed |
Diary Entries, p. 3 | No notes | Completed |
Diary Entries, p. 4 | No notes | Completed |
Diary Entries, p. 5 | No notes | Completed |
Diary Entries, p. 6 | No notes | Completed |
Diary Entries, p. 7 | No notes | Completed |
Diary Entries, p. 8 | No notes | Completed |
Diary Entries, p. 9 | No notes | Completed |
Diary Entries, p. 10 | No notes | Completed |
Diary Entries, p. 11 | No notes | Completed |
Diary Entries, p. 12 Letter from I. A. Lapham to His (unnamed) Brother, and Letter from I. A. Lapham to H. W. Howgate | No notes | Completed |
Auroral Arch | No notes | Completed |
Letter from I. A. Lapham to His (unnamed) Brother and Letter from I. A. Lapham to Edmund S. Andrews | No notes | Completed |
The Great Elephant Mound, p. 1 | No notes | Completed |
The Great Elephant Mound, p. 2 and Letter from H. N. Patterson to I. A. Lapham | No notes | Completed |
Letter from I. A. Lapham to H. F. Dousman | No notes | Completed |
Letter from H. A. Tenney to I. A. Lapham and Letter from T. C. Chamberlin to I. A. Lapham | No notes | Completed |
Letter from S. G. Lapham to His (unnamed) Uncle, p 1 | No notes | Completed |
Letter from S. G. Lapham to His (unnamed) Uncle, p 2 | No notes | Completed |
Letter from T. C. Chamberlin to I. A. Lapham and Letter from H. W. Hoyt to Doctor [Lapham] | No notes | Completed |
Letter from W. W. Daniells to I. A. Lapham | No notes | Completed |
Letter from I. A. Lapham to Moses Strong and Letter from Moses Strong to I. A. Lapham | No notes | Completed |
Letter from C. Caverno to Mr. Lapham and Letter W. W. Daniells to I. A. Lapham, p. 1 | No notes | Completed |
Letter W. W. Daniells to I. A. Lapham, p. 2 and Letter from C. V. Riley to I. A. Lapham | No notes | Completed |
Letter from Oliver Marcy to I. A. Lapham and Letter from Jas. D. Dana to Dr. I. A. Lapham | No notes | Completed |
Letter from J. C. Pickard to Dr. Lapham and Letter from F. W. Case to Hon. I. A. Lapham | No notes | Completed |
Letters from Roland D. Irving to I. A. Lapham | No notes | Completed |
Diary Entry and Letter from C. A. White to Dr. I. A. Lapham, p. 1 | No notes | Completed |
C. A. White to Dr. I. A. Lapham, p. 2 | No notes | Completed |
p. 1 | No notes | Completed |
p. 2 | No notes | Completed |
p. 3 | No notes | Completed |
p. 4 | No notes | Completed |
Letter from I. A. Lapham to L. Blodgett and Letter from I. A. Lapham to Dr. E. Foreman | No notes | Completed |
Letter from I. A. Lapham to Prof. J. Henry and Letter from I. A. Lapham to Joseph Henry | No notes | Completed |
Letters from I. A. Lapham to Prof. Joseph Henry and Letter from Joseph Henry to I. A. Lapham | No notes | Completed |
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p. 18 | No notes | Completed |