http://www.emedicine.com/EMERG/topic601.htm has been crawled 154 times going all the way back to July 2, 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

January 8, 2008

1 snapshot

8
9
10
11
12

January 13, 2008

1 snapshot

13
14
15
16
17
18

January 19, 2008

1 snapshot

19
20
21
22
23
24
25
26
27
28
29
30
31
Feb
1
2
3
4
5
6
7
8
9

February 10, 2008

1 snapshot

10
11
12
13
14
15

February 16, 2008

1 snapshot

16
17
18
19
20
21

February 22, 2008

1 snapshot

22
23
24
25
26
27
28
29
Mar
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

March 22, 2008

1 snapshot

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

April 22, 2008

1 snapshot

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

May 11, 2008

1 snapshot

11
12
13
14
15

May 16, 2008

1 snapshot

16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Jun
1
2
3
4
5
6
7
8
9
10
11

June 12, 2008

1 snapshot

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Jul
1

July 2, 2008

1 snapshot

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
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

August 30, 2008

1 snapshot

30
31
Sep
1
2
3
4
5
6
7
8
9
10
11
12
13
14

September 15, 2008

1 snapshot

15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Oct

October 1, 2008

1 snapshot

1
2
3
4
5

October 6, 2008

1 snapshot

6
7
8
9
10
11
12
13
14
15

October 16, 2008

1 snapshot

16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Nov

November 1, 2008

1 snapshot

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

December 1, 2008

1 snapshot

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://www.emedicine.com/EMERG/topic601.htm was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.