When 31-year-old Californian Joyce Hirohata was having difficulty writing her high school valedictory speech, her father handed her a book published by her grandfather, Paul Tsunegoro Hirohata.
The book features 49 graduation speeches by Japanese-American students before World War II.
Although the book helped her speech, she gave it no further thought until she turned 30 and was able to read it through adult eyes.
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