Letter to D. A. Whedon. Pittsfield, April 30, 1845.

1845 handwritten letter from Daniel Denison Whedon to Daniel A. Whedon.

Searching the Sky with CONFIGR-STARS

SyNAPSE program of the Defense Advanced Projects Research Agency (HRL Laboratories LLC, subcontract #801881-BS under DARPA prime contract HR0011-09-C-0001); CELEST, a National Science Foundation Science of Learning Center (SBE-0354378)