The story of glass,

Mode of access: Internet.

Astronomy with an opera-glass;

Mode of access: Internet.

Birds through an opera-glass,

Mode of access: Internet.

Operator, organizational, direct and general support maintenance manual (including repair parts and special tools list) : tent, lightweight, frame-type, expandable, cotton duck, 12.29 oz. per sq yd, fire, mildew, water, and weather resistant, fiber glass insulated, olive drab, without floor, 20 ft wide, center 14 ft high ....

"December 1968."

As in a looking glass : A novel.

Mode of access: Internet.