Herbert Fritz Knopf pre-WWII catalogue scans provided in high resolution .jpg and .pdf formats - preface pages, descant horns, single Bb horns, single F horns, compensating double horns, full double horns, compensating Walzenhorn, and Wagner tubas

1. HFKNOPF Cover

2. HFKNOPFs.02 Preface

3. HFKNOPFs.03 Preface p. 2

4. HFKNOPFs.04 Descant horns text

5. HFKNOPFs.05 Descant horn

6. HFKNOPFs.06 Single Bb horns text

7. HFKNOPFs.07 Single Bb horn

8. HFKNOPFs.08 Single Bb horns 5RV text

9. HFKNOPFs.09 Single Bb horn 5RV

10. HFKNOPFs.10 Single F horn text

11. HFKNOPFs.11 Single F horn 4RV

12. HFKNOPFs.12 Single F horn text 2

13. HFKNOPFs.13 Single F horn 3RV

14. HFKNOPFs.14 Compensating double horn text

15. HFKNOPFs.15 Compensating double horn

16. HFKNOPFs.16 Compensating double horn with stop valve text

17. HFKNOPFs.17 Compensating double horn with stop valve

18. HFKNOPFs.18 Compensating double horn text

19. HFKNOPFs.19 Compensating double horn

20. HFKNOPFs.20 Double horn text

21. HFKNOPFs.21 Double horn

22. HFKNOPFs.22 Double horn Single storey valve for stop text

23. HFKNOPFs.23 Double horn Single storey valve for stop

24. HFKNOPFs.24 Double horn 5RV text

25. HFKNOPFs.25 Double horn 5RV

26. HFKNOPFs.26 Compensating Walzenhorn text

27. HFKNOPFs.27 Compensating Walzenhorn

28. HFKNOPFs.28 Wagner tuba in Bb

29. HFKNOPFs.29 Wagner tuba in F

30. HFKNOPFs.30 Double Wagner tuba Bb-F

31. HFKNOPFs.31 Double Wagner tuba F-Bb