The Die Cast Price Guide: Post War -- 1946 to Present by Douglas R. Kelly. Paperback. Antique Trader, April 1, 1997. Apparently covers 125 brands, about half or less of the known brands of diecast and related automotive toys. Contains a discussion of grading.
The record of a fantastic collection in the form of a photographic feast. 1000 Tin Toys by Teruhisa Kitahara, Yukio Shimizu. Hardcover, 704 pp. Taschen America Llc, May 1, 1996.