1. Dog days mo.
2. Ending of many Polish surnames, e.g.
3. Cap
4. Doctrines
5. Campaign poster word
6. Bar bill
7. Balloon filler
8. Type of winner?
9. Listed
10. Igloo builders
11. "I could use an assist!"
12. Kind of jack
13. Allots, with "out"
18. "Si-si" at sea?
23. Start of something big?
24. Dramatic device
25. "Hey, I need you!"
27. Whale food
29. Carbon compound
32. Representative
36. Irk
38. Big mess
39. Playwright Chekhov
41. Small sailboat
43. Layers
46. Petulant
48. Dignify
51. Piddling
54. Dishearten
55. Offspring
56. In a corner
62. It comes from 50A
65. Stumble, e.g.
66. Modern evidence
67. Keats creation
68. Minute part of a minute
69. Rock blaster