Box 4

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These handwritten notebooks and memo pads are mainly written in Dr. Gross's own handwriting, usually in a quite direct language, usually without introductory matter to describe the purpose or intent of the activity. Organization is by year.

These vertical files are combinations of Dr. Gross's notes and printed material he gathered by research topics. The level of detail varies from topic to topic, suggesting that these files were created as the doctor considered the possible of a topic for an article or study.