The American Heritage Dictionary : Fourth Edition (21st Century Reference)

The Trial and Death of Socrates : Four Dialogues (Dover Thrift Editions)

Opticks: Or a Treatise of the Reflections, Refractions, Inflections & Colours of Light-Based on the Fourth Edition London, 1730

Instructor's manual for the Random House handbook, fourth edition

Descent from Glory: Four Generations of the John Adams Family

Four Stories by American Women: Life in the Iron Mills by Rebecca Harding Davis/Yellow Wallpaper by Charlotte Perkins Gilman/Country of the Pointed (Penguin Classics)

Got to Be Real: Four Original Love Stories

Countdown to Chaos (Fantastic Four)

Four Wings and a Prayer: Caught in the Mystery of the Monarch Butterfly

Montana Skies: The Legacy of Faith and Love Continues in Four Complete Novels