Mr. William Shakespeare's Comedies, Histories, & Tragedies is a collection of plays by William Shakespeare, commonly referred to by modern scholars as the First Folio, published in 1623, about seven years after Shakespeare's death. It is considered one of the most influential books ever published. Printed in folio format and containing 36 of Shakespeare's plays, it was prepared by Shakespeare's colleagues John Heminges and Henry Condell. It was dedicated to the "incomparable pair of brethren" William Herbert, 3rd Earl of Pembroke and his brother Philip Herbert, Earl of Montgomery (later 4th Earl of Pembroke). Although 19 of Shakespeare's plays had been published in quarto before 1623, the First Folio is arguably the only reliable text for about 20 of the plays, and a valuable source text for many of those previously published. Eighteen of the plays in the First Folio, including The Tempest, Twelfth Night, Macbeth, Julius Caesar and Measure for Measure among others, are not known to have been previously printed. The Folio includes all of the plays generally accepted to be Shakespeare's, except the following...