Maxwell P. Sinsheimer

Maxwell P. Sinsheimer – Editor

Nonfiction lit agent spanning food, science, history, memoir, social issues, and more. Former Oxford UP editor. 3x James Beard Award winner.

Overview

I founded a boutique literary agency in Washington, DC, representing adult nonfiction, with a particular interest in food, popular science, history, memoir, and social issues. I love narrative nonfiction, and have sold everything from a sake travelogue to a maritime adventure memoir. I've also sold cookbooks, advice books, and other forms of prescriptive nonfiction. Many of my books have a policy or advocacy angle.

Prior to founding my agency I was an editor at Oxford University Press managing their trade reference list. In that role I oversaw OUP's influential food and drink Companion series (The Oxford Companion to Beer, The Oxford Companion to Cheese, etc.), which has won or been nominated for James Beard, IACP, Gourmand, and other food writing awards. I love working with academics to help them translate their scholarship for general readerships.

Given my strong and wide-ranging track record as a literary agent, and my background as an editor at the world's top university press, I am well qualified to help you create an irresistible query letter and proposal for your smart nonfiction book, or to perform copyediting and developmental editing on your sample chapters or complete manuscript.

**Please note that I am a member of the Association of American Literary Agents (AALA), and pursuant to their updated Canon of Ethics there is a firewall between my freelance editing work and my agency work. I will not consider representing any book that I receive payment for editing or assessing. This is also not the right place to pitch me on representation; please see my agency website for submission guidelines.**

Services
Non-Fiction
Biographies & Memoirs Cooking, Food, Wine, & Spirits Health & Wellbeing History Political Science & Current Affairs Technology Travel True Crime
Languages
English (US)
Awards
  • James Beard Award for Writing & Literature
  • James Beard Award for Reference & Scholarship
  • James Beard Award for Beverage Without Recipes
Certifications
  • BA
  • MA

Work experience

Self-employed

Sep, 2016 — Present
Founded a boutique literary agency representing adult nonfiction.

Oxford University Press

May, 2012 — Jul, 2016 (about 4 years)
As a member of the acquisitions editorial team, I shaped departmental publishing priorities; conceived, commissioned, and developed four food and drink reference works averaging 250-350 contributors each; and served as the lead editor for the Encyclopedia of Social Work. Published works (selected): James Beard Award-winning Oxford Companion to Cheese (2016), edited by Catherine Donnelly; James Beard Award-nominated Oxford Companion to Sugar and Sweets (2015), edited by Darra Goldstein; Savoring Gotham (2015), edited by Andrew F. Smith; James Beard Award-winning Soda Politics (2015), by Marion Nestle; and Garner’s Modern English Usage (2016), by Bryan Garner.

Oxford University Press

Nov, 2010 — May, 2012 (over 1 year)
As an Associate Editor I wrote approved proposals for seven Oxford Research Encyclopedias, with $1m+ in funding; served as the lead U.S. editor tasked with re-designing Oxford Reference, OUP’s largest content platform (2m+ A-Z entries); and managed the trade reference program, including a publishing partnership with the Country Music Hall of Fame. Published works (selected): The Oxford Book of American Short Stories (2012), edited by Joyce Carol Oates; James Beard Award-nominated Oxford Companion to Beer (2011), edited by Garrett Oliver (more than 65k copies sold); The Encyclopedia of Country Music (2012), edited by the Country Music Hall of Fame; Sharp’s Dictionary of Power and Struggle (2011), by Nobel Peace Prize-nominated activist Gene Sharp; and the Atlas of the World (annual editions).

Oxford University Press

Oct, 2009 — Nov, 2010 (about 1 year)
I provided administrative support to the reference department and wrote a curriculum review that won approval for the A History of US textbook series to be taught in Virginia classrooms.

Portfolio

Legends of the Common Stream

Mitchell, John Hanson

Maxwell P. has 34 reviews

Professionalism

Quality

Value

Responsiveness

Cape C.

Cape C.

Jan, 2026

Pinned
Maxwell has a rare gift for seeing the 'big picture' without losing sight of the small, vital details. His developmental work helped me peel back the layers of my story and find its true heart. He is professional, insightful, and deeply committed to the integrity of the work. If you are looking t...
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Maxwell P. S.
Wow -- what a kind review, Ed! Thank you. Your book on food science communication and trust in what's on our plates is timely and important, and I can't wait to see where it lands.
Matthew K.

Matthew K.

May, 2025

Pinned
As a first-time author and someone who did not pay attention in English class, my manuscript needed a lot of work to be considered a professional book. Maxwell promised at the beginning of our collaboration that he would "Make the manuscript sing!", and he delivered on that promise. I hired him f...
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Maxwell P. S.
Matthew, I'm touched by this extremely kind review. The research you uncovered on your great-grandfather's service was incredible, and I could really tell how much his story meant to you in the car...
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Suzanne S.

Suzanne S.

Mar, 2024

Pinned
If I could give 10 stars, I would. Max not only performed the work I requested -- to offer an overall critique of the project -- but he made line edits, and thoughtful comments throughout the proposal. And he did this in days. His work was so thorough and clear that I was able to quickly rewrite ...
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Maxwell P. S.
Aw, thank you so much for the lovely review, Suzanne! Yours was a particularly fun project to work on -- exceptionally well written, propulsive narrative, and very clearly ready to shop to publishe...
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Nicholas E.

Nicholas E.

May, 2026

I think Max did a very thorough and professional proofreading my manuscript, which had many endnotes and other characteristics that needed to be addressed. He was responsive to my questions and got the work done on time. I would recommend using him for similar work without any reservations.
Maxwell P. S.
Thank you so much for this kind review, Nick. One of the joys of editing nonfiction books is the learning involved, and that was particularly true for Blood on the Rock. I didn't know much about th...
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Kelli U.

Kelli U.

May, 2026

Grateful for Maxwell's help! It's always honest and constructive.
Maxwell P. S.
Thank you for this kind review, Kelli! It was a pleasure working on your deeply moving memoir and systemic critique of the gaps in mental health services in America. Good luck finding the right hom...
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