This is not a bad clipart collection but neither is it a particularly good one, at least for my purposes.
It is from Paulist Press so it has a definite Roman Catholic flavor to much of it but many of these images are general enough to be used by any Christians. My problem is that they are all black and white. I was looking for some color images. That being said, there is no reason why many of these cannot be found to be useful in documents where color would not be expected such as a bulletin of newsletter.
The images are evocative of the themes they are supposed to indicate so they do facilitate communication. None are stellar but they are usable.
Know that this collection focuses on the Christmas and Easter cycles.