Ancestry.com has added collections of Maine birth, marriage and death records with images dating from the earliest days of European settlement to 1922. The description of each collection notes that "records were not standardize[d] and therefore are sparsely recorded" prior to 1892, but that the records from 1892-1922 are "comprehensive."
Update: Here's a glimpse at what you can find in these collections.
Yes, NEHGS said they had no intention of giving up their film. They told me of a court case in another state. The state tried to take vital records from a library after a new law was passed and the court sided with the library and they were allowed to keep the records.
I have recently found that some town offices don't go by the new law.
I just want to mention that the Ancestry Maine marriage records are missing the back page that gives info on the parents. Also, the death record is missing the back page that gives the place of burial.
I don't have an Ancestry subscription at the moment, but is this your father?
I can't explain why your great-grandmother's children don't appear in Maine VRs. Some births recorded at the town and city level were never returned to the state. Birth records for illegitimate children are withheld by the state, but presumably that shouldn't be the case for your grandmother. The most common reason for missing records is misfiling or misindexing. The Ancestry indexes are full of errors, so one has to be creative in constructing searches. Do all of your great-grandmother's children appear in Freeport town records?
Birth records were hit or miss prior to 1892, and weren't required to be returned to the state, but Charles may show up in Freeport town records. Here's how to contact the town clerk.
I wonder if Mabel's birth record was, for some reason, withheld with the others. If so, you might have better luck getting a copy from the town than from the state.
Ijust located Mabel Woodman's notarized birth certificate in an overlooked file that I received it from the Freeport Deputy Town Clerk last December. Time to reorganize my files! Ms. Howe also sent records for Mabel's grandfather (Sam'l Coffin) both his birth and death and also Thomas W. Winslow (Mabel's great-great grandfather). Thanks for your endless patience. It is very much appreciated.