1950s educational videos

18:01

30:54

15:29

20:46

1:28

6:54

4:26

7:12

10:32

15:57

1:30:30

5:38

18:39

17:47

1:10:31

10:24

15:19

11:57

16:15

18:39

19:40

4:03

7:13

12:07

10:47

17:45

2:41

4:47

3:51

3:37

15:27

4:47

3:15

4:07

3:43

4:52

3:27

4:02

6:08

3:28