Searching the internet in an attempt to differentiate E (Emily MacNab) from ME (Mary Ellen) MacNab, I ran across this poem in the University Magazine, published at McGill University. My notes suggest that both were Mrs. William MacNab, which is possible, but I need to know for sure. Mary Ellen certainly was, but I can find no marriage details for Emily.
MacNab, Emily. “My Forest.” University Magazine 18 (1919): 378.