This list does not contain every on-line public resource on these topics, but it contains many of the better ones...
Data are discrete facts and observations, information is organized data, knowledge is information-in-context, wisdom is knowledge effectively applied to solve problems.
As you may know I'm a big fan of data. You may also know I have strong feelings about workplace violence and how it is approached by the security industry. I strive to use the our publicly available knowledge base - information-in-context - to extinguish unreasonable fear on the part of employers and clients and to enlighten (embarrassingly) unreasoning security practitioners.
What follows are resources I've linked to in my myriad posts on workplace violence and its prevention and a few others I've found more recently. I am not including all news articles I’ve referred to in the past as I do not want to present poor examples out of context. If you wish to read my posts on the subject enter the phrase workplace violence in the search box and they’ll be listed for you.
A Circle of Distortion: The Social Construction of Mass Murder in the United States by Grant Duwe http://wcr.sonoma.edu/v6n1/manuscripts/duwe.pdf
Active Shooter: How To Respond http://www.alerts.si.edu/docs/DHS_ActiveShooterBook.pdf
Active Shooter: Recommendations and Analysis for Risk Mitigation http://www.nypdshield.org/public/SiteFiles/documents/ActiveShooter.pdf
ASIS International Active Shooter Resource page http://www.asisonline.org/education/activeShooter.xml
ASIS/SHRM Workplace Violence Prevention and Intervention Standard http://www.abdi-secure-ecommerce.com/asis/ps-1092-30-1967.aspx
Current Intelligence Bulletin #57: Violence in the Workplace: Risk Factors and Prevention Strategies http://www.cdc.gov/niosh/docs/96-100/
Duhart, Detis. "Violence in the Workplace, 1993-99." December, 2001. http://bjs.ojp.usdoj.gov/content/pub/pdf/vw99.pdf
Effectiveness of Crime Prevention Through Environmental Design (CPTED) in Reducing Robberies, by Carri Casteel, MPH, Corinne Peek-Asa, PhD http://www.usak.org.tr/istanbul/files/cr.pr.environmental.design.pdf
Effectiveness of Safety Measures Recommended for Prevention of Workplace Homicide, by Dana Loomis, PhD; Stephen W. Marshall, PhD; Susanne H. Wolf, RN, MPH; Carol W. Runyan, PhD; John D. Butts, MD http://jama.jamanetwork.com/article.aspx?articleid=194680
Enforcement Procedures for Investigating or Inspecting Workplace Violence Incidents CPL 02-01-052 http://www.osha.gov/OshDoc/Directive_pdf/CPL_02-01-052.pdf
Fatal Injuries to Civilian Workers in the United States, 1980-1995 http://www.cdc.gov/niosh/docs/2001-129/pdfs/2001-129.pdf
Fatal Injuries to Workers in the United States 1980-1989, A Decade of Surveillance (National Profile) http://www.cdc.gov/niosh/docs/93-108/pdfs/93-108.pdf
Fatal Injuries to Workers in the United States 1980-1989, A Decade of Surveillance (National and State Profiles) http://www.cdc.gov/niosh/docs/93-108/pdfs/93-108.pdf
Fatal occupational injuries by industry and event or exposure, All United States, 2009 http://www.bls.gov/iif/oshwc/cfoi/cftb0241.pdf
FEMA EMI IS-907 - Active Shooter: What You Can Do http://training.fema.gov/EMIWeb/IS/is907.asp
Guidelines for Preventing Workplace Violence for Health Care & Social Service Workers http://www.osha.gov/Publications/osha3148.pdf
Homicide on the Job: Workplace and Community Determinants http://aje.oxfordjournals.org/content/154/5/410.full.pdf
Mass Murder, by Dr. Tom O'Connor, Associate Professor, Criminal Justice/Homeland Security Director, Institute for Global Security, Austin Peay State University, Clarksville, TN. http://www.drtomoconnor.com/4050/4050lect07.htm
NIOSH workplace violence page http://www.cdc.gov/niosh/topics/violence/
Number and percent distribution of nonfatal occupational injuries and illnesses involving days away from work by event or exposure leading to injury or illness and number of days away from work, private industry, 2009 http://www.bls.gov/iif/oshwc/osh/case/ostb2516.pdfhttp://www.bls.gov/iif/oshwc/osh/case/ostb2516.pdf
Occupational homicides by selected characteristics, 1997-2010 http://www.bls.gov/iif/oshwc/cfoi/work_hom.pdf
Occupational Suicides: Census of Fatal Occupational Injuries Fact Sheet, August 2009 http://bls.gov/iif/oshwc/cfoi/osar0010.pdf
O'Neil, David. "Non-Fatal Workplace Violence: An Epidemiological Report and Empirical Exploration of Risk Factors." April 2003. https://www.ncjrs.gov/pdffiles1/nij/grants/199359.pdf
OSHA Workplace Violence page http://www.osha.gov/SLTC/workplaceviolence/
Recommendations for Workplace Violence Prevention Programs in Late-Night Retail Establishments - OSHA Publication 3153 http://www.osha.gov/Publications/osha3153.pdf
Revisions to the 2009 Census of Fatal Occupational Injuries (CFOI) counts http://www.bls.gov/iif/oshwc/cfoi/cfoi_revised09.pdf
Run, Hide, Fight: Surviving an active shooter event, prepared by Ready Houston? (In English, Spanish, Vietnamese, and Chinese) http://www.readyhoustontx.gov/runhidefightenglish.html
Summary of Research on Mass Murder by John Klofas http://www.rit.edu/cla/cpsi/WorkingPapers/2009/2009-11.pdf
Ten Tips to Mitigate Workplace Violence and Threats, by Felix P. Nater http://www.securitymagazine.com/articles/83329-10-tips-to-mitigate-workplace-violence-and-threats
The Psychology of Security, by Bruce Schneier http://www.schneier.com/essay-155.html
The Workplace Violence Prevention eReport http://www.workplaceviolence911.com/preventionreport
Toscano, Guy and William Weber. "Violence in the Workplace." Compensation and Working Conditions, April 1995, 1-8. http://www.bls.gov/iif/oshwc/cfar0005.pdf
U.S. BLS Census of Fatal Occupational Injuries (CFOI) 2009 Chart Pack http://www.bls.gov/iif/oshwc/cfoi/cfch0008.pdf
U.S. BLS Census of Fatal Occupational Injuries (CFOI) 2010 Chart Pack http://www.bls.gov/iif/oshwc/cfoi/cfch0009.pdf
U.S. BLS Fatal occupational injuries by selected characteristics: State of incident, employee status, sex, age, race, event or exposure, source, secondary source, nature, part of body, worker activity, location, occupation, and industry, 1992-2002 (revised final counts) http://www.bls.gov/iif/oshwc/cfoi/cftb0186.pdf
U.S. BLS Table 4, Number, incidence rate, and median days away from work for nonfatal occupational injuries and illnesses involving days away from work by selected detailed occupation and private industry, state government, and local government, 2010 http://www.bls.gov/news.release/osh2.t04.htm
U.S. Bureau of Labor Statistics. "Violence in the Workplace Comes Under Closer Scrutiny." Issues in Labor Statistics. Summary 94-10, August 1994. http://www.bls.gov/iif/oshwc/ossm0006.pdf
Violence in the Workplace by Tanya Restrepo and Harry Shuford https://www.ncci.com/documents/Workplace_Research.pdf
When Prevention Fails: Minimizing the Post-Incident Impact of Workplace Violence http://www.businessinsurance.com/section/NEWS050106
Workplace violence intervention effectiveness: A systematic literature review, by James T. Wassell http://www.sciencedirect.com/science/article/pii/S092575350800218X
Workplace Violence Prevention: Readiness and Response, by Stephen J. Romano, Micòl E. Levi-Minzi, Eugene A. Rugala, and Vincent B. Van Hasselt http://www.fbi.gov/stats-services/publications/law-enforcementbulletin/january2011/workplace_violence_prevention
Workplace Violence, 1993-2009 National Crime Victimization Survey and the Census of Fatal Occupational Injuries http://bjs.ojp.usdoj.gov/content/pub/pdf/wv09.pdf
Workplace Violence: Issues in Response, Edited by Eugene A. Rugala and Arnold R. Isaacs http://www.fbi.gov/stats-services/publications/workplace-violence
Work-related Homicides: The Facts by Eric Sygnatur and Guy Toscano http://www.bls.gov/opub/cwc/archive/spring2000art1.pdf
Work-related multiple-fatality incidents, by Dino Drudi and Mark Zak http://www.bls.gov/mlr/2004/10/art2full.pdf