This second edition of the "Guide to Critical Reviews" provides a bibliography of critical reviews of over 1,700 American plays performed on the New York stage--mostly Broadway, but some off-Broadway productions--from 1909 to 1969. Opening dates and performance totals are given with each play. Among the 290 American dramatists listed are those who are important in American dramatic history, whose plays were judged a critical success, whose plays enjoyed long runs, who have written commercial drama, who have attempted to bring poetry to the theater, and who show promise as new playwrights. Additional sections include the birthplace and birthdate of each dramatist; lists of prolific playwrights, frequently produced playwrights, popular playwrights, long running plays, Tony awards for the best plays, New York Drama Critics' Circle awards, and Pulitzer prize winners; an index of co-authors, adaptors, and original authors; and an index of titles. (JM)