Children's Book Illustration Licencing Question

I have written a Canadian based children's book that has illustrations including a Mountie in full Dress Uniform, a Toronto Maple Leafs Jersey and player, and several Throwbacks to Tim Hortons with their Logo, or for sure trademark name. Is there some publisher that helps with the licencing issues or am I on my own. I have some idea of who needs contacting, but want to make sure my bases are…