Letter from Daniel W. Kempner to Sam Litvin providing an update on European travel plans and suggesting an inquiry about visas.

Letter from Daniel W. Kempner to Lee Guth discussing changes to a proposed itinerary for a trip to Europe in the summer and fall of 1956.

Letter from Harris L. Kempner to Mark F. Heller discussing Denny's stops during his trip to Europe and hoping that he and Mark will be able to meet.

Letter from Jeane B. Kempner to Clark W. Thompson requesting letters of introduction addressed to U.S. Ambassadors to Switzerland, France, Austria, and Germany for her summer trip to Europe.

Letter from Jeane B. Kempner to Price Daniel requesting letters of introduction addressed to U.S. Ambassadors to Switzerland, France, Austria, and Germany for her summer trip to Europe.

From Introduction: "This part of Bulletin contains 250 European patents that relate to retorting (and distilling underground), refining, and utilization of oil shale and its products. The largest single group, of which the majority was assigned to a single company, relates to fluidized handling shale. The patents are arranged numerically, and alphabetical list of investors and assignees follow them. A classified list of all the patents follows the author index of Part III. Parts I and II were published in 1958."

Documents detailing financial expenses related to a European Trip in 1956, including a listing of cash disbursements and the dates and charges for stays a various hotels during the trip. Also noted are discrepancies and outstanding charges.