Abstract: A clamp used in securing a tarpaulin over a truck which has upper, open entranceway closed off by clamping lever that is biassed for urging the clamping portion into its clamping state where the clamping portion is positioned in close juxtaposition to the upper open entranceway. Each side wall has an extended slot, each slot having a open end opening into the upper entranceway. Means accessible exteriorly of the main housing for causing rotation of the clamping lever into its unclamping position is also provided, whereby a skirt portion of a tarpaulin or the like, may be inserted into the entranceway and into the first open ends of the slots and clamped by the clamping portion of the clamping lever. The rear wall has a downwardly-extending portion and a hole formed in it for receiving a cord therethrough, whereby the clamp may be secured to the frame of a truck and the like.