How can you tell who owns what? Usually, you need to ask the publisher. As a very general rule, authors of articles in scholarly journals and other periodical publications traditionally retain subsequent print publication rights. Also, as a general rule, most authors of books do not control the right to copy portions of their published books since print reproduction rights is one of the exclusive rights universally granted to book publishers. (Note, in the event that the publisher stops selling the book, these rights commonly revert to the author -- or at least they used to in the old days of publishing ...). So even though the author may be enthusiastic about including the work (and may be listed as copyright owner), the publisher may be the one who has to okay the use.
We support your work and wish publishers would support it too (instead of making you beg like Oliver Twist). If the Dear Rich Staff made more money we would shovel it towards our favorite conservation nonprofit located in the nearby (and beautifully named) town of Petaluma.