[NHCOLL-L:2203] letters and freezers

[Tonya Haff]

Hi all,

I have a two very different questions.  The first was put forth to me 
by a researcher who is working on naming a _Datura_ specimen.  Do 
letters that he has received from specialists need to be placed in a 
library archive in order to be cited?  Just wondering if any of you 
have had experience with this.

My second question pertains to freezing herbarium specimens to 
prevent/stop pest problems.  Are there any standardized or favored 
methods as to how long to place specimens in the freezer?  I've heard 
various suggestions, and am not sure what the best method is.

Thanks,

Tonya
-- 
Tonya M. Haff
Senior Museum Scientist
Museum of Natural History Collections
Environmental Studies Department
University of California
1156 High Street
Santa Cruz, CA 95064
phone: (831) 459-4763
fax: (831) 459-4015
email: thaff at ucsc.edu