Every page is a forgery of a lost work. They are very shoddy forgeries because each of the first five pages names an event that happened after the death of the attributed writer. Make the anachronism a window (literally poking a hole into the forgery) and superimpose it onto the next page. The sequence of anachronisms will spell out "DOUBLE-SPEAK LANGUAGE NAMED FOR FABLES WRITER". This will give the answer AESOPIAN.
Page 1:
Margaret Fuller's (died 1850) history of the 1849 Italian Revolution
Anachronism: Battle of Castelfidardo (1860)
Page 2:
Shakespeare's (died 1616) Love's Labour's Won
Anachronism: English Civil War (1642-1651)
Page 3:
Chaucer's (died 1400) The Book of the Leoun
Anachronism: Battle of Wakefield (1460)
Page 4:
Agrippina the Younger's (died 59) memoirs
Anachronism: Siege of Jerusalem (70)
Page 5:
Aristotle's (died 322 BCE) Poetics (Book 2)
Anachronism: Dyskolos (c. 317 BCE)
Page 6:
Confucius' The Classic of Music
Anachronism: N/A (last page)