While your request mentions a ".zip" download—which often appears on sites offering digital manuals, 3D printing files, or simulator skins—the most prominent "1x48 Babs" content refers to high-quality physical model kits and historical documentation.

: Mitsubishi Babs: The World's First High-Speed Strategic Reconnaissance Aircraft (Volumes 1 & 2) by Giuseppe Picarella offers exhaustive technical and historical data.

: Reviewers from Model Airplane Maker praise its excellent engineering and fit, comparing it to Tamiya-level quality.

: The Fine Molds FB23 1/48 Mitsubishi Ki-15-I "Babs" is widely considered the gold standard for this aircraft in this scale. Key Features : Scale : 1/48.

: Forums like Britmodeller and WW2Aircraft.net are prime spots to find shared build logs, color charts, and rare photos.