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Across
  1. 5. was an experimental physicist and inventor who received 50 U.S. patents in the fields of semiconductors
  2. 6. Wiren is a member of both the PGA Hall of Fame and the World Golf Teachers' Hall of Fame.
  3. 8. was an American inventor residing in Palos Hills, Illinois, who specialized in robotics and home automation
  4. 9. His letters, essays, and books describing his adventures in nature, especially in the Sierra Nevada
Down
  1. 1. He designed at least 50 golf courses and made alterations on over 100 more
  2. 2. was a United States Army officer, surveyor, inventor, and entrepreneur
  3. 3. as a nineteenth-century American inventor who was awarded two patents for pollution-reducing devices. In 1881
  4. 4. He started his career by working for 13 years from 1986 to 1999 as an engineer at Martin Marietta Astronautics in Denver, Colorado.
  5. 7. He introduced mass production to the art of clockmaking