Variation and changes in the salaries of members of the American Institute of Physics are examined. Graphics highlighting some of the patterns are presented, along with detailed tables and brief summary text. The data are based on a sample survey of the United Statess members conducted in spring 1983. The overall response rate was 69%, Tables cover salaries and geographic location, salaries and employer type for Ph.Ds, salaries and employer type for master's and bachelor's degrees, salaries and primary work activity, and salaries and employer type for male and females. Most of the discussion centers on median and quantile salaries. The tables also present for comparison the salary means and standard deviations along with the median ages of each group. Information on salary change between 1982 and 1983 is included. The most typical comparisons are cross-section, by which the 1983 median salary of industrially employed Ph.Ds are compared to the median salary of similarly employed individuals in 1982. In addition, longitudinal data, which looks at the same people at two or more points in time, provide a better picture of these actual increases. Technical notes are included. (SW)