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2005 - Life Member, F. Scott Fitzgerald Society
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1998-99 - National Endowment for the Humanities Fellowship for University Teachers for completion of the edition of Trimalchio
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1998 - Faculty Scholar Medal for Outstanding Achievement in the Arts and Humanities
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1997 - American Philosophical Society Research Grant for work on an edition of Fitzgerald's Trimalchio
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1994-95 - National Endowment for the Humanities Fellowship for University Teachers for completion of William Styron: A Life for William Styron: A Life
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1994 - Visiting Scholar, American Academy in Rome for research on William Styron: A Life
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1991 - Society for Textual Scholarship, Fredson Bowers Memorial Prize: Distinguished Essay on Textual Scholarship, "Editorial Theory and the Act of Submission"
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1991 - National Endowment for the Humanities Summer Stipend for work on William Styron: A Life
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1989-90 - Fulbright Senior Teaching Award in American Literature, University of Liège, Belgium
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1988 - American Council of Learned Societies Grant-in-Aid, for research on William Styron: A Life
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1987 - Fellow, Institute for the Arts and Humanistic Studies, Pennsylvania State University
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1987 - Elected Life Fellow, Clare Hall, Cambridge University
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1985-86 - Fulbright Senior Research Award, United Kingdom
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1985-86 - Guggenheim Fellow
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1983-84 - American Philosophical Society Research Grant
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1983 - Rosenbach Fellow in Bibliography, University of Pennsylvania
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1981-82 - Fellow, National Humanities Center
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1981 - American Council of Learned Societies Grant-in-Aid
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1978-79 - National Endowment for the Humanities Grant, Research Tools and Editing Program