Have them fax the recommendation in whenever it is ready. It takes less than a day during off-peak season, about 1-2 days during peak season, to process a faxed letter. It takes from 7-15 business days to process a mailed letter. Fax, fax, fax!
(The fax number is: 215-504-1444. Make sure they also send the cover letter with your signature!)
is this cover letter of which you speak different than the letter of recommendation form? in other words, if we're faxing it in, we just need the letter of recommendation form and the letter itself?