Dear Ms. Anderson,
Thank you for posting your request on History Hub!
We suggest that you check WorldCat to see if there is a copy of the book that can be made available through a local library: https://www.worldcat.org/title/early-narraguagus-river-families-of-washington-county-maine/oclc/50497428
In reference to the Milbridge birth records issue, we suggest that you contact the Milbridge Historical Society (http://milbridgehistoricalsociety.org/) to see if they can confirm what is held locally.
We hope this information is helpful. Best of luck with your family research!
[Information provided by Elizabeth Burnes, Subject Matter Expert]