In nonfiction is it a good idea to capitalize nouns that precede numbers or letters, as in: Refer to Table 1. He presented Exhibit A. It happened in Chapter 4. He stole cash from Register 2. I liked him since Day 1. That is illustrated in Appendix B. If this is good, should we cap the plurals too? Refer to Tables 1 and 2. He presented Exhibits A and C. It happened in Chapters 4 and 5. He stole cash from Registers 2 and 6. That is illustrated in Appendixes B and C. Thanks.