The complete text of Frankenstein is here available in both of its
major editions, along with a catalogue of all the variants between the
editions. Manuscript variants in the so-called Thomas copy of the second
edition (see the textual history), located in
the Pierpont Morgan Library, are excluded from the textual record as,
never appearing in a published text authorized by Mary Shelley, they
remain indicative of areas where she felt a substitute text to be called
for but cannot otherwise be claimed to possess true textual authority.