14: Bird with an eerie call
15: Measure off a distance, perhaps
20: It's treated in a plant
22: Acknowledges silently
24: Try to prevent, as an investigation
36: Tended a squeaky hinge
47: Carry all over the place
49: Something to build on
52: Early manuscript versions
57: Triangular-bodied instrument
60: Holding areas for newcomers?
61: '___ Came You' (1974 Dionne Warwick and Spinners chart-topper)
63: By no means long-winded