More information, with less hyperlinking to the actual letters, is here: <a href="https://tellersofweirdtales.blogspot.com/2022/12/gertrude-hemken-1912-1992.html" rel="nofollow">https://tellersofweirdtales.blogspot.com/2022/12/gertrude-he...</a><p>An example letter:
<a href="https://en.wikisource.org/wiki/Page%3AWeird_Tales_volume_30_number_01.djvu/128" rel="nofollow">https://en.wikisource.org/wiki/Page%3AWeird_Tales_volume_30_...</a>