1 : New York Times_1981_April_01
2 : New York Times_1981_April_02
3 : New York Times_1981_April_03
4 : New York Times_1981_April_04
5 : New York Times_1981_April_05
6 : New York Times_1981_April_06
7 : New York Times_1981_April_07
8 : New York Times_1981_April_08
9 : New York Times_1981_April_09
10 : New York Times_1981_April_10
11 : New York Times_1981_April_11
12 : New York Times_1981_April_12
13 : New York Times_1981_April_13
14 : New York Times_1981_April_14
15 : New York Times_1981_April_15
16 : New York Times_1981_April_16
17 : New York Times_1981_April_17
18 : New York Times_1981_April_18
19 : New York Times_1981_April_19
20 : New York Times_1981_April_20
21 : New York Times_1981_April_21
22 : New York Times_1981_April_22
23 : New York Times_1981_April_23
24 : New York Times_1981_April_24
25 : New York Times_1981_April_25
26 : New York Times_1981_April_26
27 : New York Times_1981_April_27
28 : New York Times_1981_April_28
29 : New York Times_1981_April_29
30 : New York Times_1981_April_30