I’ve been playing with the relationship calculator to figure that whole 5th cousin twice removed thing. Anyway, not specifically Shaw related, but helpful in pinning down what portions of the US Census to look for former Shaw residents by street.
The One-Step Webpages by Stephen Morse are more helpful when you have a subscription to Ancestry. Yes, the same Ancestry.Com that maybe one day will digitize the material in the DC Archives. Maybe. Without the subscription it points you in the right direction.
There are other tools on the site that are useful if you’re looking into 19th and early 20th Century immigrants going through New York. It would be a great resource for people doing New York history. Unfortunately, I’m not doing New York history.