--- /dev/null
+# Investigation: Goudy Bookletter 1911
+
+## Summary
+
+Goudy Bookletter 1911 is a serif display typeface by Barry Schwartz, based on Frederic Goudy's Kennerley Oldstyle. It was added to Google Fonts in the initial repository commit (2015-03-07). The upstream repository at `theleagueof/goudy-bookletter-1911` contains a single commit with UFO sources but no `config.yaml`. The font has never been updated since initial onboarding. An override config.yaml can be created for gftools-builder using the UFO source.
+
+## Key Findings
+
+| Field | Value |
+|--------------------|--------------------------------------------------------------------|
+| Family Name | Goudy Bookletter 1911 |
+| Designer | Barry Schwartz |
+| Repository URL | https://github.com/theleagueof/goudy-bookletter-1911 |
+| Commit Hash | 85ff5b834b4f63feb36fd2053949c19660580e48 |
+| Config YAML | None in upstream; override config.yaml needed in google/fonts |
+| Source Format | UFO (source/GoudyBookletter1911.ufo) |
+| Status | missing_config |
+| Confidence | HIGH |
+
+## Investigation Details
+
+### METADATA.pb Current State
+
+The current METADATA.pb already has a source block with the repository URL and commit hash:
+
+```
+source {
+ repository_url: "https://github.com/theleagueof/goudy-bookletter-1911"
+ commit: "85ff5b834b4f63feb36fd2053949c19660580e48"
+}
+```
+
+The repository_url was added by Simon Cozens in commit `474a446c0` ("More upstreams (g,h)", 2024-01-14). The commit hash was added in commit `9a14639f3` ("Add source blocks to 602 more METADATA.pb files", 2026-02-25).
+
+### Upstream Repository Analysis
+
+- **Repository**: https://github.com/theleagueof/goudy-bookletter-1911
+- **Cached at**: upstream_repos/fontc_crater_cache/theleagueof/goudy-bookletter-1911
+- **Branches**: master only
+- **Total commits**: 1 (single initial commit)
+- **Commit**: `85ff5b8` by micah rich, 2011-05-25
+
+The repository contains:
+- `source/GoudyBookletter1911.ufo` - UFO source (gftools-builder compatible)
+- `GoudyBookletter1911.otf` - Pre-built OTF binary
+- `webfonts/goudy_bookletter_1911-webfont.ttf` - Pre-built TTF (40,896 bytes)
+- No `config.yaml` or build configuration
+
+### Onboarding History
+
+The font was included in the google/fonts initial commit (`90abd17b4`, 2015-03-07) along with all other fonts. The TTF in google/fonts is 73,496 bytes, while the TTF in the upstream webfonts directory is 40,896 bytes -- they are different files. The font in google/fonts was never updated (same binary since the initial commit).
+
+Since the font predates gftools-packager, there is no PR or commit message referencing the upstream repo. However, the only commit in the upstream repo is `85ff5b8`, and this is the only possible commit to reference.
+
+### Config YAML Assessment
+
+The upstream repo has a `.ufo` source file at `source/GoudyBookletter1911.ufo`, which is compatible with gftools-builder. However, there is no `config.yaml` in the upstream repo. An override config.yaml could be created in the google/fonts family directory:
+
+```yaml
+sources:
+ - source/GoudyBookletter1911.ufo
+```
+
+## Conclusion
+
+The source block in METADATA.pb is already correct with repository URL and commit hash. The only missing piece is a build configuration. An override `config.yaml` should be added to the google/fonts family directory to enable building from the UFO source.
+
+### Current METADATA.pb Source Block (already correct)
+
+```
+source {
+ repository_url: "https://github.com/theleagueof/goudy-bookletter-1911"
+ commit: "85ff5b834b4f63feb36fd2053949c19660580e48"
+}
+```
+
+### Recommended Override config.yaml (for google/fonts directory)
+
+```yaml
+sources:
+ - source/GoudyBookletter1911.ufo
+```
+
+**Status**: missing_config (override config.yaml needed)
+**Confidence**: HIGH -- only one commit exists in the upstream repo, making the commit hash unambiguous.