September 2024 Archives

Search for tax exempt organizations | Internal Revenue Service

You don't need to pay a website for access to a charity's 990 filings and tax-exempt determinations. They're available for free on the IRS website.

Euclid's elements in color
Translated and published in 1847 by Oliver Byrne: The first six books of the elements of Euclid, in which coloured diagrams and symbols are used instead of letters for the greater ease of learners. High resolution scans on the Harvard Library website.

Norfolk County, Massachusetts, Map, 1858: David Rumsey collection

Before Dorchester, Roxbury, and West Roxbury were annexed by Boston and Suffolk County, making Brookline an exclave of the county.