The AmericanAncestoes website has a Learning Center (http://www.americanancestors.org/learning-center/) with links to videos, logs and charts, and subject guides.
I clicked on the "Read" link on the screen above, and the "Read" page (http://www.americanancestors.org/read/) showed a link for Articles and for Subject Guides:
The available Subject Guides include:
Let's take a look at one of these - I chose the "New York Research" guide (5 screens below):
For New York, after a brief introduction, the first section is a list of Guides and Finding Aids, followed by a list of different Record Types (e.g., Census, Church Records, Vital Records, etc.). If there are NEHGS online databases, they are listed and linked.
These Subject Guides provide an excellent bibliography that can be found at the NEHGS Library in Boston, and most of them can be found at a decent genealogical, regional or local public library in the USA.
The URL for this post is: http://www.geneamusings.com/2014/10/tuesdays-tip-nehgs-subject-guides-at.html
Copyright (c) 2014, Randall J. Seaver