On the Ref-net today, someone was asking about a list of psalms to go with Lord’s Days from the Heidelberg Catechism. Such lists have long been published in Dutch church books. I’ve just uploaded the list (“register”) from the 2002 Gereformeerd Kerkboek. You can find it by following the link, “Liturgical Helps” on the right side of the page. And no, you don’t need to read Dutch to be able to use this resource. As long as you know that Zondag = Lord’s Day, you’re good to go.