The football Giants may well be ""one of the great dynasties of sport"", as the author claims, and no one can reasonably fault him in his thorough- going effort to grove it. From that historic day in the '20s, when Tim Mara brought a National Football League franchise for little more than the price of Manhattan Island, to the bitter defeat of last fall's championship game, no significant event, no star has been neglected. Through its pages gridiron giants run, block, tackle, pass and catch. The great sparkle, the aged strain, the injured wince, and the spectators cry out for victory, blood -- or both. The author's fidelity to chronology makes for a good deal of repetition, since player signing, training, exhibitions and league play occur on an inexorable annual basis. Outside of this, and a fairly lively bias in favor of the Maras and their minions, he has done a useful and generally entertaining book.