This is the project history of Gossamer. You may be looking for the software history (release log)
Gossamer Health is an information technology that inherits knowledge gained through a decade of experience with surveillance infrastructure-related projects. Here we (incompletely!) list some publications related to that experience.
Lober WB, Karras BT, Wagner MM, Overhage JM, Davidson AJ, Fraser H, Trigg LJ, Mandl KD, Espino JU, Tsui FC: Roundtable on bioterrorism detection: information system-based surveillance. J Am Med Inform Assoc 2002, 9:105-115.
Mandl KD, Overhage JM, Wagner MM, Lober WB, Sebastiani P, Mostashari F, Pavlin JA, Gesteland PH, Treadwell T, Koski E, et al: The Practice of Informatics - Review Paper - Implementing Syndromic Surveillance: A Practical Guide Informed by the Early Experience. Journal of the American Medical Informatics Association : JAMIA 2004, 11:141.
Lober WB, Trigg L, Karras B: Information system architectures for syndromic surveillance. MMWR Morb Mortal Wkly Rep 2004, 53 Suppl:203-208.
Hills RA, Lober WB, Painter IS, Workshop: Biosurveillance, Case Reporting, and Decision Support: Public Health Interactions with a Health Information Exchange. 2008.