1. A-1 Commercial Photo Service (1)
2. A. Douglas and Company (1)
3. A. Fraser and Company (1)
4. A.C. Pillsbury Company (1)
5. A.C. Taylor and Company (1)
6. A1 Passport Photo Company (1)
7. Abbott (4)
8. Aber (1)
9. Aber Studio Ltd. (1)
10. Aberdeen (1)
11. Academy of Portrait Art, Ltd. (1)
12. Academy Studio (1)
13. Accetti (1)
14. Ackerman Brothers Publishers (1)
15. Adami (1)
16. Adams (2)
17. Adams and Company (1)
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18. Adams and Larkin (1)
19. Adams and Pierce (1)
20. Addington (1)
21. Adney (1)
22. Aero Surveys Ltd. (1)
23. Aero-Pix (1)
24. Agnew (1)
25. Aidar (1)
26. Aikens (1)
27. Aikman (1)
28. Aird (1)
29. Ajax Photo Studio (1)
30. Alaska Photo Co. (1)
31. Alaska View & Photo Co. (1)
32. Alberstone (1)
33. Albert Studio (1)
34. Albrecht (1)
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35. Alder Cottage Studio (1)
36. Alexander (1)
37. Alexander Studio (1)
38. Allen (5)
39. Allison (3)
40. Allman (1)
41. American Stereoscopic Company (1)
42. American Studio Company (1)
43. Amos (1)
44. Anderson (4)
45. Andrews (3)
46. Andrews & Evans (1)
47. Androchourcz (1)
48. Angelus Studio Limited (1)
49. Annable (1)
50. Ansell (1)
51. Arcade Studio (1)
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52. Arcadia Studio (1)
53. Archer (1)
54. Archibald (1)
55. Arctic Studio (1)
56. Arikado (1)
57. Ariss (1)
58. Aristo Studio (1)
59. Armitage (1)
60. Armour (1)
61. Armour Photographic Laboratories (1)
62. Art Centre (1)
63. Art Craft Studio (1)
64. Art Emporium (1)
65. Art Studio (1)
66. Art-O-Camera Studios (1)
67. Arthur (1)
68. Artona Studio (1)
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69. Artray Limited (1)
70. Arts Photo Studio (1)
71. Artura Studio (1)
72. Arundel (1)
73. Asher (1)
74. Ashman (1)
75. Ask Us Photographers (1)
76. Associated Screen News Ltd. (1)
77. Atkins (2)
78. Atkinson (1)
79. Attwood (1)
80. Atwood (1)
81. Atwood and Cantwell (1)
82. Aunt Molly (1)
83. Austin (2)
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