http://chnm.gmu.edu/ has been crawled 714 times going all the way back to January 28, 1998.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ

Jan
1
2
3
4
5
6
7
8
9
10
11

January 12, 2011

2 snapshots

12
13
14
15
16
17
18
19
20
21
22
23
24
25

January 26, 2011

1 snapshot

26
27
28
29

January 30, 2011

1 snapshot

30

January 31, 2011

1 snapshot

31
Feb
1

February 2, 2011

1 snapshot

2

February 3, 2011

1 snapshot

3
4
5

February 6, 2011

1 snapshot

6

February 7, 2011

1 snapshot

7

February 8, 2011

1 snapshot

8
9
10
11
12
13
14
15
16
17
18

February 19, 2011

1 snapshot

19
20
21
22
23
24

February 25, 2011

1 snapshot

25
26
27
28
Mar
1
2
3

March 4, 2011

1 snapshot

4
5

March 6, 2011

1 snapshot

6

March 7, 2011

1 snapshot

7
8
9
10
11

March 12, 2011

1 snapshot

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

March 29, 2011

1 snapshot

29
30
31
Apr
1
2
3
4
5
6
7

April 8, 2011

1 snapshot

8

April 9, 2011

1 snapshot

9
10
11
12
13

April 14, 2011

1 snapshot

14
15
16
17
18
19
20
21

April 22, 2011

1 snapshot

22
23
24
25
26
27
28
29
30
May
1
2
3
4
5
6
7
8
9
10

May 11, 2011

1 snapshot

11

May 12, 2011

1 snapshot

12

May 13, 2011

1 snapshot

13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Jun
1
2

June 3, 2011

1 snapshot

3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

June 21, 2011

1 snapshot

21
22
23
24
25
26
27

June 28, 2011

1 snapshot

28
29
30
Jul
1
2
3
4
5
6
7

July 8, 2011

1 snapshot

8
9

July 10, 2011

1 snapshot

10
11

July 12, 2011

1 snapshot

12
13
14
15

July 16, 2011

2 snapshots

16
17
18

July 19, 2011

1 snapshot

19
20
21
22
23
24
25
26
27
28
29
30
31
Aug
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Sep
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Oct
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Nov
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Dec
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

Note

This calendar view maps the number of times http://chnm.gmu.edu/ was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.