| How the First Letter Was Written |
1976 |
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| How the Colonies Grew |
1970 |
Pictura Films |
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| How the body uses energy |
1960 |
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| How the Body Moves II: The Skeleton |
1968 |
BBC/Lawrie Lawler |
800 ft. |
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| How the Body Moves I: The Muscles |
1968 |
|
800 ft. |
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| How the Animals Discovered Christmas |
1963 |
Coronet Instructional Films |
500 |
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| How the Animals Discovered Christmas |
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Coronet (CORT) |
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| How Sweet It Is: Sugar |
1978 |
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| How Supervisors Appraise Performance |
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| How Sunshine Helps Us |
1961 |
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| How Sound Helps Us |
1964 |
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| How Solid is Rock? |
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| How Solid is Rock |
1967 |
Encyclopaedia Britannica |
800 ft. |
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| How Solid Is Rock |
1960 |
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| How Simple Machines Make Work Easier |
1960 |
Coronet |
200 ft. |
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| How Seeds Are Scattered |
1957 |
Centron Films. |
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| How Plants Reproduce |
1957 |
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| How Plants Help Us |
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| How Old Is Old |
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12:00 |
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| How Nature Protects Animals |
1959 |
Encyclopedia Britannica Films Inc. |
|
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| How Nature Protects Animals |
|
A/V Geeks 16mm Films |
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| How Nations Work Together |
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12:00 |
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| How Much Is Enough Part 2 |
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12:00 |
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| How Much Is Enough Part 1 |
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12:00 |
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| How much is a miracle |
1960 |
lilley |
1200 ft. |
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| How Much Does the Earth Weigh? |
1980 |
Journal Films |
400 ft. |
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| How Much Does the Earth Weigh? |
1980 |
Journal Films |
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| How Much Does the Earth Weigh? |
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| How Much Cooperation? |
1958 |
McGraw-Hill Films |
400 ft. |
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| How Much Cooperation? |
1958 |
McGraw-Hill Films |
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| How Much Are Your Eyes Worth? |
1975 |
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| How Much Affection? |
1958 |
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| How Materials are Alike and Different |
1960 |
Coronet (CORT) |
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| How Materials Are Alike and Different |
1964 |
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| How many Stars |
1958 |
Moody Institute |
400 ft. |
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| How Many Stars |
1954 |
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| How Many Stars |
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| How Man Discovers His past |
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| How Man Discovers His Past |
1970 |
McGraw-Hill Films |
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| How Man Discovers His Past |
1970 |
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| How Man Adapts to His Physical Environment |
1970 |
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| How Man Adapts to His Physical Environment |
1970 |
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7:00 |
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| How Machines and Tools Help Us |
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| How Long Is A Minute? |
1973 |
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400 ft. |
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| How Long Is A Minute |
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| How Little, How Big |
1964 |
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| How Life Begins Part 2 of 2 |
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12:00 |
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| How Life Begins Part 2 |
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12:00 |
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| How Life Begins Part 1 of 2 |
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12:00 |
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| How Life Begins |
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12:00 |
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