Mary Stilwell might have died from a brain tumor. Mina Miller died of old age at 91 (natural cause a part of life)
old age
Because Mary had a brain tumor
one of thomas edisons inventions were the phoneograph and ther light bulb
Thomas Edison had minimal formal education. He only attended school for a few months before being taught mostly by his mother at home. Edison was largely self-taught and developed a love for reading and learning on his own.
Mina Miller Edison died August 24, 1947 she was 82
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Thomas Alva Edison
thomas edisons weakness was his inventions
miller
a coma
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It made music.