Timeline of Book Covers The evolution of The Washington Manual of Medical Therapeutics book covers from present to past. 1995 – 28th edition 1992 – 27th edition 1989 – 26th edition 1986 – 25th edition 1983 – 24th edition 1980 – 23rd edition 1977 – 22nd edition 1974 – 21st edition 1971 – 20th edition Posts pagination Previous Page 2 of 4 Next Page