Contact staff by calling 920-380-7491 or by emailing directly:


Executive Director

Maria Costello

I have been the Executive Director of the Paper Discovery Center since May 2016. Prior to this I lived in Milwaukee and was the director of two art museums. I find working with nonprofits fulfilling and use more of my skills and talents than my for-profit positions ever allowed.

Besides travel (often to visit grandkids!), I enjoy good books, live theater, movies and interior design.

It is an honor to be part of such a wonderful and talented team at the Paper Discovery Center.



Michael Breza, Lead Educator

I fell into museum work by good fortune, learning my craft on the job. For over 28 years I have created exhibits that make people happy. I love exhibit work; it makes me think and explore new directions. I do not know where this talent comes from, but I am grateful for it.

One of the most interesting aspects of museum work is that I end up working with some unusual items. I have stood in a treasure vault filled with shipwreck coins, drove Abraham Lincoln’s shawl to a museum, smelled perfume from the Titanic, held a Viking sword, hung artwork of dazzling skill and put the Wicked Witch of the West hat on display.


Sharon Clothier

I work as an Educator, bringing additional experience as a museum curator and mother to my role. Entering my fifth year at Paper Discovery Center, I enjoy leading workshops and interacting with visitors of all ages.


Carol Couillard

I work as an Educator at the Paper Discovery Center. I love coordinating Scout Programs, researching STEM-related topics for school groups, and talking about the history of paper-making with visitors.

I am a graduate of the University of Arizona, with a degree in History. Before starting at the Paper Discovery Center, I worked as a program coordinator for a natural history museum and as a school librarian.


Wendy Hayes

I have recently retired from the Weyauwega-Fremont School District where I taught 2nd grade for 35 years. Upon being hired by the Paper Discovery Center in September 2016 I discovered that my teaching days were not over. I enjoy working with the many students who visit our center on fieldtrips. I also plan programs for Home School Mondays. It is always a pleasure working with visitors and learning about their hometowns, some as far away as India, England, Italy, Japan and Finland. The best part of my day is making paper in our paper lab and planning craft projects.


Business Coordinator

Michelle Fietzer

Each day as the Business Coordinator for the Paper Discovery Center is interesting and varied. Business management experience along with 25 years as an educator helps me bring creative solutions to the PDC. I work on keeping you informed about the fun and interesting classes our educators develop, thanking our generous donors or planning our big annual events. Each year we have a huge recognition event for key contributors to the paper industry called the Hall of Fame dinner. Along with the rest of the team, I help to plan and execute the event to ensure it is a fun and successful evening for all. More social events are being planned for the public, so continue to check out our website and Facebook page. When you come to visit, you will meet our amazing staff and see the beauty of the Fox River up close.


General Questions

Ann Wittenberg, Guest Services

I recently moved back to Wisconsin from Georgia, bringing many years of customer service experience along with the education I received from many, many preschoolers. I enjoy working with the children and families who visit the Paper Discovery Center. I am here to greet you when you arrive, help you make beautiful paper in the paper lab, and to remind you to take in the incredible view of the Fox River before you leave.