Answer :
CSI Ingrid, to find information on inks dating back to the 1920s for her analysis of the historical document attributed to Theodore Roosevelt, can reference the following databases:
1. **the Historical Ink Registry:** This database could potentially provide information on historical inks, including those used during the 1920s. It might contain records or documentation of inks used in various historical contexts, which could be valuable for Ingrid's analysis.
2. **the International Ink Library:** Another possible database where Ingrid could find information on inks dating back to the 1920s. This library may have a wide collection of ink samples, their compositions, and properties, which could help her in identifying and analyzing the ink used in the document.
These databases could offer valuable insights into the composition, age, and characteristics of inks used during the 1920s, aiding CSI Ingrid in her analysis of the historical document attributed to Theodore Roosevelt.
