Bayer Aspirin Crystals Mass Mailing:  There will be a nationwide mass mailing of 178,000 envelopes from the Bayer Aspirin Company.  Approximately 33,561 of these envelopes will contain a sample of Bayer Aspirin Crystals, which is a white powder.  Area police departments, EMT's, and hospitals should be aware of these mailings and the potential to present as "white powder" calls.  In addition, private sector mailrooms should be aware that these envelopes may be coming through their respective facilities.