TOP SECRET
Intelligence Summary (IS) -- usually a periodic summary of regional or functional intelligence on current capabilities of foreign powers. The term became obsolete in 1952.
Working Paper (WP) -- a preliminary version of a Scientific Intelligence Report or of certain parts of an extended project. The category was replaced in 1952 by the Provisional Scientific Intelligence Report (PSIR).
Scientific Report (SR) -- This category was replaced in 1950 by the Scientific Intelligence Report (SIR).
Miscellaneous Publication (MP) -- a compendium of information such as lists and descriptions of installations or publications; a little used category.
Scientific Intelligence Report (SIR) -- this category was replaced about 1964 with the Scientific and Technical Intelligence Report (STIR). These are analytical, estimative studies that present conclusions on a specific intelligence problem concerning foreign
- 88 -
TOP SECRET