| EIN | Employer Identification Number | Employer identification number. | |
| FisYr | Fiscal year | Fiscal year (ending year) | |
| NAME | Name of organization | Organization name. | |
| STATE | State | Two-letter state abbreviation. | |
| FileName | Return Image Identifier | Unique image file name (string = [EIN]_[fiscal year ending yyyymm]_[Return Type Code]) | |
| Latest | Most recent fiscal yr return | Latest=1 indicates return is from the most recent fiscal year reported by the organization (Note: an organization may have more than one return in any fiscal year - see LatestOne) | |
| LatestOne | Latest fiscal yr return filed | LatestOne=1 indicates the single most recent return available from the organization (use to select the last available return filed by an organization for the latest fiscal year reported). | |