-Font was designed by Brian J. Bonislawsky (Astigmatic). No source repository URL was recorded in METADATA.pb. The family was added to Google Fonts in 2012.
+# Mouse Memoirs — Source Investigation
-**Repo:** unknown
-**Commit:** unknown
-**Config:** none
-**Status:** No upstream source recorded
-**Confidence:** Low
+**Model**: Claude Opus 4.6
+
+## Source Repository
+
+| Field | Value |
+|-------|-------|
+| **Repository** | [googlefontdirectory-hg](https://github.com/googlefonts/googlefontdirectory-hg) |
+| **Commit** | `52f780bc9d197280a9f430574e179a5f233c56b6` |
+| **Source path** | `ofl/mousememoirs/src/` |
+| **Buildable** | No — VFB only (proprietary format) |
+
+The font sources are in the **googlefontdirectory-hg** monorepo, a git mirror of the
+original Google Code Mercurial repository (`code.google.com/p/googlefontdirectory`)
+that was the canonical host for Google Fonts from 2010 to 2013.
+
+### Source files (5)
+
+- **.vfb** (FontLab, proprietary format): MouseMemoirs-Regular.vfb, MouseMemoirs-Regular-OTF.vfb, MouseMemoirs-Regular-TTF.vfb
+- **Compiled binary** (not a design source): MouseMemoirs-Regular.otf
+- **Metadata**: METADATA_comments.txt
+
+The only design sources are VFB files, which require FontLab (proprietary) to open and cannot be built with gftools-builder.
+
+## Build System
+
+Not applicable — no gftools-builder-compatible sources exist.
+
+## Notes
+
+- Font was designed by Brian J. Bonislawsky (Astigmatic)
+- The family was added to Google Fonts in 2012
+- Single style: Regular
+- No other public upstream repository has been identified