ASMS has commissioned the preparation of a series of historical posters. Many of these posters were first displayed at the 50th Anniversary Conference held in Orlando, FL, June 2–6, 2002. The posters are available on a loan basis for the cost of shipping. All files are PDF.The information covered here is available in hardcover in the ASMS 50th anniversary volume, Measuring Mass: From Positive Rays to Proteins, Michael A. Grayson, ed. $25.00. purchase online.