The The Official Hotel Red Book, 1920 Edition was published by the American Hotel Association. The following is a list of hotels in Cowlitz County that were listed in the directory. Each hotel listing includes the following information: whether fares are American Plan (A.P., meals included) or European Plan (E.P., meals not included), the nightly room rate, and name of the proprietor. Hotels listed in all capitals were "first class Houses".

Railroad abbreviations used:
G.N. = Great Northern
N.P. = Northern Pacific
O.W. = Ontario and Western

p. 744

CASTLE ROCK, Cowlitz Co. Pop. 1,000. (RR., N.P.; O. W. & G. N.)
SAVOY HOTEL. (E. P.) $1. Geo. Maxwell.

p. 745

KALAMA, Cowlitz Co. Pop. 816. (RR., Nor. Pac.)
Kalama House.

KELSO, Cowlitz Co. Pop. 2,500. (RR., N. P.; O. G. N.; O. W. & Nav. Co.)
ROCKWOOD HOTEL. (E.P.) $1 up. L. H. LeVasseur.
WASHINGTON HOTEL. (E.P.) 75c. up. R. Robbins.