Answer:

MYTH

AnswerCrossword Clue
MYTH"Doubleday invented baseball," e.g.
MYTH"Gore invented the internet," e.g.
MYTHBit of folklore
MYTHVery tall tale
MYTHLegend
MYTHEl Dorado, for one
MYTHOld wives' tale
MYTHFiction
MYTHThe Fountain of Youth, for one
MYTHTale involving Greek gods, e.g.
MYTHGreek god story, e.g.
MYTHIt's not true
MYTHFable
MYTHSasquatch, for instance
MYTHUrban legend, e.g.
MYTHIt's not a true story
MYTHThe stuff of legends
MYTHLegendary story
MYTHCommonly held false notion
MYTHIt's not really true
MYTHSubject for Bulfinch
MYTHStory
MYTHLegend's cousin
MYTHJupiter, Mars, and Neptune's realm?
MYTHThe lost city of Atlantis, e.g.
MYTHTale that never happened
MYTHFantasy
MYTHPandora's box, e.g.
MYTHFolk story
MYTHBit of lore
MYTHOld story
MYTH"Daedalus and Icarus," e.g.
MYTHFolklore story
MYTHBulfinch topic
MYTHAncient Greek legend
MYTHAncient legend
MYTHAncient tale
MYTHUrban legend
MYTHUnfounded belief
MYTHUrban ... (modern legend)