Here is a rabbit hole

Maybe a coincidence

Was going on the assumption that 1SQ was a code

1 19 17

11917 is the zip code for Riverhead NY

Its not a large town looked for notable residents and visitors

Then found Riverhead Books

Founded in 1994 by Susan Peterson Kennedy

Dug on her she is on the board of

The Human Trafficking Legal Center

Needs more digs

Just putting this out there