Compensation survey from State of California Dept. of Personnel Administration covers a wide range of job titles in county, city and other jursidictions (in .pdf format.)
National Society Of Professional Engineers Income & Salary Survey
For What It's Worth
M.I.T. Graduate Salary Offers
Chemical & Engineering News Salary Employment Outlook
Chemical Engineering & News' annual survey of chemist & chemical engineer employment (all educational levels) and salaries.
Starting Salaries for Chemists & Chemical Engineers
Salaries for Chemical Engineers/Chemists
Structural Engineer Compensation Survey
Biennial salary survey of Structural Engineer readers.
Evaluation Engineers Salary Survey
Evaluation Engineer's report for electrical engineers involved in testing, calibration, development and quality control.
EE Times Salary Survey
IEEE - USA Salary Survey
Institute for Supply Management Salary Survey
Summary of salary survey for management in purchasing/supply management/sourcing from Supply Chain Management Review.
Sales & Engineering Salary Survey
Process Control Salary Survey
Survey of salaries & bonuses for process control engineers from Control Magazine
Geological Salary Survey
American Association of Petroleum Geologists annual salary survey.
Petroleum Engineers Salary Survey