The ornamental design for an upper cushioncover of a camp chair, as shown and described.
FIG. 1 is a perspective view of the upper cushion cover of a camp chair of
this invention;
FIG. 2 is a front view thereof; and,
FIG. 3 is a top view thereof.
The rear and bottom of the upper cushion cover of a camp chair are not
being claimed. The broken-line showing of environmental structure in FIG.
1-3 is for illustrative purposes only and forms no part of the claimed
design.