Scope and Contents This collection contains a Goniometer made by James W. Queen and Company of Philadelphia. A goniometer is an instrument that either measures angle or allows an object to be rotated to a precise angular position. The term goniometry is derived from two Greek words, gonia, meaning angle and metron, meaning measure. The Goniometer is from the late 19th Century. It stands on a black metal base with three legs. The Goniometer has three individual scopes that are linked to the cylinder container...

Scope and Contents From the Collection:

The Mabelle Campbell photograph collection includes six photo albums, thirty-nine loose photos, two Philadelphia Rapid Transit Company Hiking Club Lists, and nine pamphlets from the Leidy Microscopical Club. The albums, photos, and papers document excursions of the Delaware Valley Naturalists Union from 1894-1939. According to a conversation with Mrs. Campbell in 1980, most of the photographs were taken by Harold Palmer

This collection is arranged chronologically.

Scope and Contents From the Collection:

The Mabelle Campbell photograph collection includes six photo albums, thirty-nine loose photos, two Philadelphia Rapid Transit Company Hiking Club Lists, and nine pamphlets from the Leidy Microscopical Club. The albums, photos, and papers document excursions of the Delaware Valley Naturalists Union from 1894-1939. According to a conversation with Mrs. Campbell in 1980, most of the photographs were taken by Harold Palmer

This collection is arranged chronologically.

Scope and Contents

The Mabelle Campbell photograph collection includes six photo albums, thirty-nine loose photos, two Philadelphia Rapid Transit Company Hiking Club Lists, and nine pamphlets from the Leidy Microscopical Club. The albums, photos, and papers document excursions of the Delaware Valley Naturalists Union from 1894-1939. According to a conversation with Mrs. Campbell in 1980, most of the photographs were taken by Harold Palmer

This collection is arranged chronologically.