Mary Laselle not much info can be found but she was born Jan 24th, 1860 and died around 1926.
Parents ; Ralph and Augusta Maria Lasell 1820–1898
John son of Ralph and Augusta M Lasell died May 4, 1869 ae 11 years.
Active in the Vermont and Massachusetts area as a musician and authour of 12 books.
https://www.goodreads.com/author/list/5992254.Mary_A_Laselle
This is not your 'all stops out' closing Postlude so I thought the under appreciated Lipiny organ 1898 probably by Adolf Volkmann would be just right. The solo stop at the beginning is the free reed Trompete 8'.
https://piotrgrabowski.pl/lipiny/
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