This photo of a buggy, a rider and a man leading the horse was taken in Jamaica in 1900.

(This case study was added to OER Commons as one of a batch of over 700. It has relevant information which may include medical imagery, lab results, and history where relevant. A link to the final diagnosis can be found at the end of the case study for review. The first paragraph of the case study -- typically, but not always the clinical presentation -- is provided below.)

A 71-year-old female had been well until approximately 2 years before admission, when a neurologist noted muscle rigidity, decreased arm swing while walking, mask-like face, pill rolling tremor and some difficulty in writing. Levodopa/carbidopa (up to 200mg/day) was not effective and was withheld because of exacerbation of tingling sensation of the lower extremities. Four months before admission, she complained of visual hallucinations of children or objects. Endoscopic examination identified a gastric ulcer as a cause of melena and anemia, which lead her to this admission.

A map of the eastern United States in 1790 showing the western extent of the territories to the Mississippi, and the distribution of European–American population at the time. The map is keyed to show areas of population densities ranging from under 2 inhabitants per square mile to areas with 90 or more inhabitants per square mile.

Poster circulated in Philadelphia in 1839 to discourage the coming of the railroad, 1839

On July 20, 1969, the Apollo 11 mission brought the first humans to the Moon. On that day President Nixon spoke with crewmembers Neil Armstrong and Buzz Aldrin via telephone-radio transmission.

Source: This edited presentation features film footage from the White House Staff Super 8 Film Collection and audio from the White House Communications Agency Sound Recording Collection.

Ayako Suwa is intent on spreading a new concept of food that evades labels such as gourmet and nutritional. She believes that to eat is to live, but we must taste to truly evolve, and those tastes include happiness, regret, anger and more.

A map from 1912 of the United States, subtitled "Distribution of Population and Railways in 1900" showing the increase in population and expansion of the railroad network since 1850. The map is color–coded to show population densities ranging from areas with fewer than 2 inhabitants per square mile to areas of 90 or more inhabitants per square mile. Cities with populations over 8,000 are shown with circles proportionate to their populations at the time. The map shows the westward progression of the mean centers of population from 1790 to 1900.

Watch this video summarizing the activities at the White House during the week of July 12, 2013. Events included the second annual kid's state dinner with young chefs from each state and territory.