Lot is for a vintage 1923 postcard sent to Dr. Milo Wilson from HARROWER LABORATORIES introducing their "AN ORGANOTHERAPEUTIC CATECHISM" card series advertising their pharmaceutical products available to doctors.  This is card #1,a nd was mailed from Glendale, California on Feb. 9, 1923.  It is a US Postal Card, with a 1 cent Thomas Jefferson pre-print stamp on the front of the card.  Card in overall good condition.  See photos.