So, questions and observations.
What is the sacred shape? The only 3 points we know are Philadelphia, Montreal and Central Park. Can we divine a shape from these?
Edit: Doesn't seem so. We only have 1 line from Philly to Montreal.
Who were Sullivan's friends? This is the first we've heard of them. We have names, Ishi, Colby and Mendelssohn. Are any of those names significant?
"What my mother used to call a lullaby". That seems like an odd non sequitor. Is it important?
The 94 Mountaineers were 'blown to the six corners'. Anyone else get the impression we're about to find out what happened to them?