Ken Yoffe is a pediatrician with a practice in Billerica, Massachusetts. In addition to his M.D., Ken holds a Ph.D. in genetics. Ellen Weisberg is a researcher in the field of leukemia at the Dana Farber Cancer Institute in Boston, Massachusetts. Ellen holds an M.S. and Ph.D in pharmacology.
 
Ken and Ellen are members of the Society of Children's Book Writers and Illustrators (SCBWI). Ellen and Ken, co-authored and illustrated “Friends and Mates in Fifty States” (Galde Press, Inc., 2008), ”All Across Canada” (Chipmunkapublishing, 2008), "All Across China" (Chipmunkapublishing, 2009) and "Fruit of the Vine (Chipmunkapublishing, 2010). Ellen's writing credentials also include the young adult novel, "Gathering Roses" (Chipmunkapublishing, 2007), as well as publications in PKA's Advocate and Natural Solutions Magazine. In addition, Ellen is an illustrator of e-cards and print cards develpoed by Mountain Mist Productions.
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