- Footwear, 1510-1540
- For a quart of Ale is a dish for a King
- For two days and two nights the boat was tossed hither and thither
- Ford’s Theatre, where President Lincoln was assassinated
- Fore-limb of Monkey compared to fore-limb of Whale
- Forlanini’s helicopter, 1878
- Formal arrangements in London parks
- Former Constantinian Basilica of Saint Peter. Restitution
- Fort Astoria
- Fort Hall
- Fort Hamilton, from whence United States troops were sent to aid in suppressing the Draft Riots of 1863
- Fort Lafayette, New York Harbour
- Fortress of the mole
- Fossil collecting Equipment
- Fossil Identificaton Chart - I Radial Symmetry
- Fossil Identificaton Chart - II Bilateral Symmetry
- Fossil Identificaton Chart - III No apparent Symmetry
- Fossil plants—tracheophytes
- Fossil starfishes, crinoids, and holothurian sclerites
- Found upon the doorstep
- Founder of Han - 11th Century BC
- Fountain
- Four boys playing marbles
- Four children dancing at the seashore
- Four children playing with their toys
- Four Children walking down the street
- Four children walking wih two women
- Four Cylinder Locomobile
- Four girls in dresses
- Four ladies with flowers in their hair
- Four little girls
- Four little girls and a boy
- Four Little Highland Girls
- Four long and bloody months
- Four men on the train
- Four o'clock huh
- Four Orphaned Robins
- Four-course Cittern
- Four-cylinder Pope-Toledo
- Four-handled Water-jug
- Four-horned turtle bearer
- Fourteen persons burned at Orleans, France
- Fourteenth century
- Fourteenth century, 1st half
- Fourteenth century, 2nd half
- Fourteenth Sunday in ordinary time
- Fourth of Advent
- Fourth of Lent
- Fourth Sunday of Easter
- Fox
- Fox goose
- fp-1
- fp-2
- fp-3
- fp-4
- fp-5
- Fra Angelico, of Fiesole
- Fragment of a Church-window, representing the 'Prodigal Son.'
- Fragment of a Window presented to the Cathedral of Evreux
- Fragment of an engraved and stamped Binding in an unknown Material