Penny's Pocket: a tale about bringing a sibling home through gestational surrogacy

Penny's Pocket: a tale about bringing a sibling home through gestational surrogacy
written and illus. by Elizabeth K. Hebl, M.D. 
Language: English 
Doctor Mom Books, 2017. 
30 p. : col. ill. ; cm.
ISBN: 0692847723 ; 9780692847725 Summary: A tale of a family of o'possums who use a gestational surrogate to bring home their second child. This is a children's book to help understand infertility and gestational surrogacy. It is intended for children under the age of 8. 
Available: https://www.amazon.com/Pennys-Pocket-sibling-brought-gestational/dp/0692847723/