I.       Gleason and His Work

1.        H.W. Gleason at Thoreau's cairn, Walden Pond
           May 19, 1908

2.        Gleason map of Concord, prepared for 1906 editions of Thoreau's writings

3.        L.W.G. [Mrs. Gleason] in Thoreau's cave at Lee's Cliff
           May 14, 1919
 

II.      Ponds and Pools 

4.        White Pond, stony shore
          July 16, 1900; 6 P.M.

5.        Ice melting in Fairyland Pond
           [Date unknown]

6.        White Pond, blue flag in fg. [foreground]
           July 16, 1900

7.        Sunset, Bateman's Pond
           August 19, 1900

8.        Yellow water crowfoot in Conantum pool (Ranunculus delphinifolius 
          multifidus)
           May 14, 1919

9.        Overlooking Walden Pond toward Mt. Wachusett, from Pine Hill
           April 28, 1906

10.       Northwest cove of Walden, ice breaking up (train in distance)
            March 31, 1920

11.       Sun sparkles on Walden, from Heywood's Peak
            October 21, 1920 
 

III.     Rivers and Brooks

12.        Leaning Hemlocks, down river
             March 28, 1916

13.        Ball's Hill opposite Brewster's cabin, clamshells in foreground
             October 30, 1899

14.        Egg Rock
             October 31, 1899

15.        Brook in woods at Barrett's Mill Pond
             May 27, 1900

16.        Fair Haven Bay and island through trees
             April 12, 1906

17.        Reflections in "smooth vernal lake" by village,—down stream from the 
            Bridge 
             April 15, 1918

18.        Great Meadows from Flint's Bridge
             June 30, 1917

19.        Reflections of clouds and trees in Assabet, from Mason's shore
             June 25, 1901
 

IV.    Animal Life

20.        Partridge nest at foot of pine near Brister's Spring
             May 19, 1908

21.        Muskrat cabin in bushes on west side of Carlisle Reach
             November 6, 1917

22.        Am. Bittern on edge of boat by riverside (rear view)
             July 16, 1917

23.        Tracks of rabbits
             March 5, 1918
 

V.     "Thoreau's Country" (hand-colored  images from Gleason's 
               Thoreau centenary slide lecture)

24.        Up river from Nashawtuc

25.        Walden Pond, October foliage

26.        Walden in winter (arching limb)

27.        Trees reflected in river

28.        Fog from Nashawtuc

29.        Old apple tree, below Punkatasset

30.        Snow-drifts behind stone wall
 

VI.    Roads

31.        Road through woods, back of Farmer's
             May 23, 1900 

32.        Brister's Hill, toward village
             October 18, 1904

33.        Old Carlisle Road
             December 1, 1916

34.        Old Marlborough Road, guide post
             November 7, 1899
 

VII.   Woods and Fields 

35.        Cows in pasture at Baker Farm
             June 20, 1903

36.        Fallen leaves through the Corner Spring Woods
             October 15, 1899

37.        Farmer's Cliff from meadow
             [Date unknown]
 

VIII.  Plant Life

38.        Butterfly on Joe-Pye-Weed
             August 17, 1900

39.        Large shad-bush in bloom (near Baker's Bridge)
             [Date unknown]

40.        Hellebore in Easterbrook Woods
             May 17, 1920

41.        Spray of witch-hazel
             October 19, 1904

42.        Hedge Bindweed (Convolvulus sepium)
            June 17, 1904

43.        Kalmia glauca in vase
             May 30, 1901

44.        Old stump and woodpecker's hole, Corner Spring Woods
             October 25, 1899
 

IX.     The Winter Landscape

45.        Tree shadows on snow, lane up Poplar Hill
             January 20, 1904

46.        Icicle formation on Fair Haven Cliffs
             February 8, 1918

47.        Hoar frost on trees and fence rails, road near Baker's Bridge
             February 11, 1918

48.        Leaning Hemlocks in winter
             January 30, 1904

49.        Road through Brister's Swamp, heavy snow
             February 17, 1902
 

X.      The Built and Human Landscape

50.        Old Tarbell Place, with lilacs, seed-corn, dog, etc.
             May 24, 1908

51.        Lee's Bridge from road
             October 24, 1899

52.        Edward Garfield, 88 years old
             May 15, 1918

53.        Sam Barrett's saw mill
             November 8, 1899

54.        The Milldam from northwest (Concord Main Street)
             March 31, 1920

55.        Hubbard's Bridge, hoarfrost
             November 8, 1899
 

XI.     The Distant View: Panoramas

56.        The Cliffs, toward Conantum (rustic seat in foreground)
             June 26, 1917

57.        Across face of Cliffs toward Conantum
             October 15, 1903