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Title | Description | Category | ||
|---|---|---|---|---|
 | Mitchell, Barbara | Eli Whitney's love of inventing and pondering new ideas made him one of America's greatest inventors. Best known for inventing the cotton gin, one of the most important American inventions of the century, he changed cotton production forever. A few years later, Whitney invented machines to make muskets that were… | Living History Level 43 ⋅ Level 43 items | |
 | Mitchell, Barbara | Henry Ford loved mechanical things: springs and gears and cogs and wheels, things that clicked and ticked and turned. One hot summer day in 1876, Henry and his father were riding to Detroit in the farm wagon when suddenly there was a huffing and puffing monster heading straight toward them… | Level 43 items |