Archibald Douglas (Ballade), Op. 138. Adaptation of ballad by Theodor Fontane; composed by Carl Loewe, arranged by P. A. Marquardt. Orchestral score 1941 March 12
Concertino (12th Concerto) for Violin and Orchestra. Composed by Louis Spohr, new edition by P.A. Marquardt. Orchestral score undated
March (D minor). Orchestral score 1929 February 18
March (F major). Orchestral score and parts 1928 September
March (G major). Orchestral parts undated
Melodies of Josef Strauss: Fantasia for Piano and Orchestra. Orchestral parts undated
A Merry Overture. Orchestral score, draft copy 1942 December 4
A Merry Overture. Orchestral score, final copy 1942-1943
A Merry Overture. Piano score circa 1942
Opera (Scene 1).Orchestral score 1938 March 25
Opera (Scene 2).Orchestral score 1938 April 12
Opera (Scene 1). String parts circa 1938
Ramasan: Oriental Suite (Part I). String parts 1930
Ramasan: Oriental Suite (Part I). Woodwind and brass parts 1930
Ramasan: Oriental Suite (Part I). Percussion parts 1930
Ramasan: Oriental Suite (Part I). Orchestral score 1930
Ramasan: Oriental Suite (Parts II and III). Orchestral score 1930 June 16
Regimenstag: Marsch. Parts for 1st clarinet, tuba, and drums (ozalid copy) undated
Rondeau Brillant. Orchestral parts undated
Serenade for Five Wood Instruments. Conductor's score and parts undated
Sonata in C minor (composed by H.I.F. Biber, arranged by P. A. Marquardt). Orchestral score undated
Sonata in C minor (composed by H. I. F. Biber, arranged by P. A. Marquardt). Violin parts undated
Sonata in C minor (composed by H. I. F. Biber, arranged by P. A. Marquardt). Viola, cello, and bass parts undated
Sonata in C minor (composed by H. I. F. Biber, arranged by P. A. Marquardt). Orchestral parts undated
The Unknown Soldier: Legend for Baritone, Male Chorus and Orchestra. Vocal scores 1941 September 2
Untitled composition. Orchestral score 1941 March 29
Untitled fragment undated
Published scores 1925-1928
1. The Enchanted Castle (Poeme Mysterieuse) 1926
2. Scherzo Silhouette 1928
3. Ardent Affection (A Passionate Episode) 1928
4. Witty Moments (Humoresque) 1928
5. Vision Orientale 1927
6. A Night in the Orient (Dance of the Harem) 1927
7. A Desert Dance (Dramatic Oriental Dance). 2 copies 1927
8. Fi-Ya-Di (Oriental Dance) 1925
9. A Halloween Ride (Characteristic Sketch) 1928
10. The Midnight Parade (A Mysterious Episode) 1927
11. The Devil's Elixir (A Mysterious Patrol) 1927
12. The Wooden Soldier's Tournament 1927
13. Happy Moods (Intermezzo) 1927
14. The Hermit's Dream (Pastorale Romantique) 1928
15. Love's Response (Romance) 1928
16. Love's Emotion (Andante Appassionato) 1928
17. To My Star (Serenade Romantique) 1928
18. Wild Flowers (Intermezzo) 1928
19. Woodland Frolics (Rondeau) 1928
20. Wedding Dreams (A Love Story) 1928
21. Morning Dew (An Outdoor Episode) 1927
22. The Season's Greetings (Serenade) 1927
23. Spring Fancies (Intermezzo) 1925
24. Dreamy Moments (Serenade Amorous) 1925
25. Pearls of My Soul (Reverie Religieuse) 1925
26. Romance of Autumn (Poeme Elegiac) 1925
27. Alone at Night (Meditation) 1925
28. Moonlight Dreams (Nocturne) 1926
29. Star Night (Nocturne) 1925
30. Hidden Love (An Old Love Song) 1927
31. The Lure of Crimson (Tragic Sonata) 1925
32. Moonlight in Naples (Barcarolle) 1925
33. Springtime of Life (Serenade) 1925
34. Reproche d'Amour (Entr' Acte) 1925
35. Dance of the Sylphes (Valse de Ballet). Score missing undated
36. A Regal Episode: The King's Entrance (March Pomposo) 1927
37. A Smile- A Kiss (Ballad) 1928
38. Incidental Symphonies: Stormy Conflict 1925
39. Incidental Symphonies: The Villain's Den 1925
40. Incidental Symphonies: Furious Enemies 1925
41. Incidental Symphonies: The Coaching Party 1928
42. Incidental Symphonies: Threatening Sea 1927
43. Symphonic Color Classics No. 5: A Twentieth Century Romance 1925
44. Symphonic Color Classics No. 6: A Sex Drama 1926
45. Symphonic Color Classics No. 9: A Gypsy Romance 1928
46. Franco- Espano Suite (Spanish Love Theme) 1927
47. Miracle Scene (From Offenbach's Opera, "The Tales of Hoffmann". arranged by P.A. Marquardt) 1928
48. Symphonic Color Classics No.1: In Autumn 1925
49. Symphonic Incidentals No. 1: Damnation 1926
50. Symphonic Incidentals No. 2: Threatening Winds 1927
51. Symphonic Incidentals No. 3: The Captive's Lament 1927
52. Symphonic Incidentals No. 4: Chasing Phantoms 1927
53. Symphonic Incidentals No. 5: Allegro Scherzo or Dramatic Tarantelle 1927
54. Symphonic Incidentals No. 6: Ominous Moments 1927
55. Symphonic Incidentals No. 7: Tragic Pathos 1927
56. Symphonic Incidentals No. 8: Nautical Allegro 1927
57. Symphonic Incidentals No. 9: Overture Allegro Suspense 1927
58. Symphonic Incidentals No. 10: Hurried Overture Allegro 1927
59. Symphonic Incidentals No. 11: A Tragedy 1927
60. Symphonic Incidentals No. 12: Abomination 1927
61. Symphonic Incidentals No. 13: Fatalistic 1928
62. Symphonic Incidentals No. 14: Sinister Drama 1928
63. Symphonic Incidentals No. 15: Scherzo Sinister 1928
64. Symphonic Incidentals No. 16: Regal Allegro Non Troppo 1928
65. Symphonic Incidentals No. 17: Sinister Pathos 1928
66. Symphonic Incidentals No. 18: Allegro Tension 1928
67. Symphonic Incidentals No. 19: The Third Degree 1928
Fragment of book containing sonatas by various composers undated