6. 
BO KOSTASHUK ♂
13. Douglas KOSTASHUK
14. Douglas KOSTASHUK
20. E KOSTASHUK
24. E KOSTASHUK
28. E B KOSTASHUK
30. 
ERIK KOSTASHUK
31. George KOSTASHUK
34. GEORGE KOSTASHUK ♂
36. G N KOSTASHUK
37. G N KOSTASHUK
38. G. N. KOSTASHUK
41. H KOSTASHUK
44. J KOSTASHUK
45. J KOSTASHUK
46. J KOSTASHUK
47. J KOSTASHUK
48. J KOSTASHUK
50. J KOSTASHUK
52. J. KOSTASHUK
53. J. KOSTASHUK
54. J. KOSTASHUK