The book, US Self-Propelled Guns In Action (# 38) represents an in-depth pictorial review of the self-propelled guns utilized by the United States Army and Marine Corps during World War II.  The self-propelled guns reviewed include the following: 1) M7; 2) Sexton; 3) M8; 4) M12; 4) M40/43 and 5) M37/41.  The major sections of "US Self-Propelled Guns In Action (# 38)" are as follows: 1) Introduction; 2) M7 Priest Howitzer Motor Carriage; 3) Sexton; 4) M8 Howitzer Motor Carriage; 5) M12 Gun Motor Carriage including Combat Service; 6) M40 GMC/M43 HMC including Combat Service and 7) M37/M41 Howitzer Motor Carriages.  In addition to an informative narrative, "US Self-Propelled Guns In Action (# 38)" includes the following features: 1) Approximately 104 black and white photographs; 2) About 26 black and white illustrations; 3) 8 color US Self-Propelled side profile illustrations; 4) 1 three-way M7 Priest HMC black and white illustration with specifications; 5) 1 three-way M12 GMC black and white illustration with specifications and 6) 3 color cover paintins.  This book is 50 pages and is in new condition.  The author is Jim Mesko with Don Greer (colorist) and Richard Hudson (illustrations).  Edition published in 1999.