keyscholar or database
readexplained / found readread in part
— read unchanged - - adapted or partial
About the data
Every link is taken from an explicit statement in the target's notes: that a letter was read with a named key, unchanged or adapted, or
that a key was rebuilt from that letter's own material. Links are not inferred from resemblance. A key that read only one letter is
still shown, because where it came from is part of the story. Several of George Lasry's tables for the French correspondence of the 1520s
and 1530s appear as one node. The file is keys.json.