[JLS]

Would any non-member have had any way to know the sorority used that storage site.

How many chapters of this sorority existed between Washington DC and Princeton and how many actual houses had a mail box nearby? [Just a guess that at at least one of UMD, Georgetown, U of Del, Johns Hopkins, etc Penn, UMD-Baltimore, etc there is likely to have been such a house near a mailbox, but who knows.]

[Shermy]

The explanation, as of about 3:00 pm today:

Kappa Kappa Gamma also has chapters at nearby colleges in Maryland, Pennsylvania and Washington. One official said investigators were working off the theory that Ivins chose to mail the letters from the Princeton chapter to confuse investigators if he ever were to emerge as a suspect in the case.

That's the story!