The AAVSO Archives—ECP, WTO organiz. coll.

AAVSO Organiz. ECP, WTO, LC Box 1 Early Correspondence
AAVSO Organiz. ECP, WTO, LC Box 1 First Books
AAVSO Organiz. ECP, WTO, LC Box 1 L. Campbell to W. T. Olcott
AAVSO Organiz. ECP, WTO, LC Box 1 L. Campbell to W. T. Olcott
AAVSO Organiz. ECP, WTO, LC Box 1 Letters of Appreciation
AAVSO Organiz. ECP, WTO, LC Box 1 Meeting Minutes, general and council
AAVSO Organiz. ECP, WTO, LC Box 1 Membership lists
AAVSO Organiz. ECP, WTO, LC Box 1 Misc. council and meeting items
AAVSO Organiz. ECP, WTO, LC Box 1 Misc. organiz. papers and reports
AAVSO Organiz. ECP, WTO, LC Box 1 Original corporation papers
AAVSO Organiz. ECP, WTO, LC Box 1 Pickering / Olcott letters
AAVSO Organiz. ECP, WTO, LC Box 1 Pickering, E. C., classif. of stellar spectra
AAVSO Organiz. ECP, WTO, LC Box 1 Pickering, E. C., misc. papers
AAVSO Organiz. ECP, WTO, LC Box 1 Pickering, E. C., photographic magnitudes committee
AAVSO Organiz. ECP, WTO, LC Box 1 Proctor, R. A.
AAVSO Organiz. ECP, WTO, LC Box 1 Yale