1. Present membership in organizations Collection: Early 20th Century Engineering Lantern Slides Set: Line & Staff Location: unknown Date: undated Format: Image Agent: unknown
2. Number of dependents Collection: Early 20th Century Engineering Lantern Slides Set: Line & Staff Location: unknown Date: undated Format: Image Agent: unknown
3. Table comparing the percentage of men and women by age groups Collection: Early 20th Century Engineering Lantern Slides Set: Line & Staff Date: undated Format: Image Agent: unknown
