Witzenburg, Gary, "1981-88 Chevrolet Monte Carlo: Daytona Beach Overtakes the Côte d'Azur", Publication International, Ltd., Collectible Automobile", Volume 41, Number 4, December 2024, page 8-19

Witzenburg, Gary, "1977-81 Pontiac Firebird: Showroom Superstar", Publication International, Ltd., Collectible Automobile, Volume 43, Number 2, August 2026, page 24-45

Gabrick, Robert, "1973 Chevrolet and GMC Light-Duty Trucks: Squarely on Target", Publication International, Ltd., Collectible Automobile, Volume 41, Number 5, February 2025, page 66-79

Foster, Patrick, "1978-83 AMC Concord: Running Out of Options", Publication International, Ltd., Collectible Automobiles, Volume 43, Number 1, June 2026, page 44-55

Gabrick, Robert and Editors of Collectible Automobiles, "1960-65 Ford Falcon Ranchero and Sedan Delivery: Pint-Size Haulers", Publication International, Ltd., Collectible Automobiles, Volume 43, Number 1, June 2026, page 60-69

Fiorani, Sam, "1969 Chevrolet Camaro: A Little of This, A Little of That", Publication International, Ltd., Collectible Automobile, Volume 42, Number 3, October 2025, page 8-23

This covers the combination of RS (Rally Sport), SS (Super Sport), RS/SS, and Z/28 (RPO Z28) option packages.

A nice unrestored example here

Stewart, Jack, "Photo Feature: 1961 Chevrolet Bel Air Two-Door Sedan", Publication International, Ltd., Collectible Automobile, Volume 40, Number 2, August 2023, page 42-45

It is model 1511 with 235.5 CID six with three on the tree

Sikora, Don II, "Cheap Wheels: 1989-92 Chevrolet C/K 1500 Sport", Publication International, Ltd., Collectible Automobile, Volume 40, Number 2, August 2023, page 86