| Collection Descriptive Notes | Phonology 1-8; Lessons 1-24 |
| Collection Technical Notes | Masters are apparently the “originals” from the (unnamed) publisher, wound off onto hubs. |
| Contributor |
This collection has no playable audio.
| Title | Contributor | Medium |
|---|---|---|
| GMN 6.1 (M) | Mueller, Hugo (researcher); Unknown (consultant) | 1/4 inch audio tape |
| GMN 6.2 (M) | Mueller, Hugo (researcher); Unknown (consultant) | 1/4 inch audio tape |
| GMN 6.3 (M) | Hugo, Victor (researcher); Unknown (consultant) | 1/4 inch audio tape |
| GMN 6.4 (M) | Mueller, Hugo (researcher); Unknown (consultant) | 1/4 inch audio tape |
| GMN 6.5 | Mueller, Hugo (researcher); Unknown (consultant) | 1/4 inch audio tape |
| GMN 6.6 (M) | Mueller, Hugo (researcher); Unknown (consultant) | 1/4 inch audio tape |
| GMN 6.7 (M) | Hugo, Victor (researcher); Unknown (consultant) | 1/4 inch audio tape |