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Re: Photo question



Hi,  I would suggest you get a copy of Archives & Manuscripts: Administration of Photographic Collections by: May Lynn Ritzenthaler, Gerald J. Munoff and Margery S. Long.  This book has a section on the history of photographs as well as on administrating and caring for different types of photographs.  It has dates and thing.  It's a good reference.  Hope this is of some help to you.

Deborah I. Gouin
Department Analyst
Records and Forms Management Division
Department of Management and Budget
State of Michigan
517-335-8965
gouind@state.mi.us
517-335-8965

>>> jschnidr@USGS.GOV 01/08/01 03:52PM >>>
How long did it take to make a photographic exposure in the mid-1800's
(1860, if you want a specific date)?  Did it depend on the photo type?