This paper contains supplements to two catalogs which have previously been published by the author. One of the supplements updates a catalog of temperatures for FGK dwarfs (see Taylor, PASP, 106, 452, 1994). The other supplement updates a catalog of averaged values of [Fe/H] for the same stars (see Taylor, PASP, 106, 704, 1994). The combined catalogs and supplements include values of [Fe/H] published through the end of 1993. Detailed instructions are given for catalog users, including an algorithm for adding data to the [Fe/H] catalog. For recent sources of [Fe/H] which require comment, discussions of issues such as data editing and zero-point corrections are given. A review is also given of a problem described by Gray (PASP, 106, 1248, 1994), who finds that his spectroscopic temperatures and photometric temperatures from Paper II scatter more around their mean relation than one would expect from the contributing rms errors. It is found that near-Sun reddening (which is Gray's preferred solution of the problem) is not a defensible explanation for this scatter. For the moment, the real source of the scatter remains unknown.