🔑📜⭐
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#key work
#original source
#influential document
#primary source
#important text
⛲️⬆️💡
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#fountain
#source
#primary source
#headspring
#idea source
1️⃣📜✍️
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#first documentation
#primary source
#first entry
#earliest account
#initial data
#key work #original source #influential document #primary source #important text