I am looking for a publishing company to submit a children's book I have written to. Does anyone have a recommendation of which company to contact? At this time, it does not yet have illustrations completed although I do have an illustrator lined up. Any words of wisdom would help. Thank you,
The best thing to do would be to identify the two or three children's books your project is most similar to and query their publishers.
Also, from what I recall in past research, you should query based on your ms only and don't bother engaging the illustrator yet, because publishers will want a hand in choosing her/him. You also don't need to embed notes about the illustrations unless some are integral to making points that your words can't.