Consolidated interpretation bulletin.

Mode of access: Internet.

Photographic chemistry /

Includes index.

A complete treatise on the art of retouching photographic negatives and clear directions how to finish & colour photographs.

Mode of access: Internet.

The photographic story of Mars /

Mode of access: Internet.

An interpretation of Rudolf Eucken's philosophy.

Bibliography: p. 245-248.

The coming crash; an economic interpretation of present day history.

Mode of access: Internet.

Contributions to photographic optics,

Mode of access: Internet.

Nantucket, a photographic sketchbook.

Mode of access: Internet.

Baruch Spinoza and Western democracy; an interpretation of his philosophical, religious, and political thought.

Mode of access: Internet.

Asclepius; a collection and interpretation of the testimonies,

Mode of access: Internet.