The names of Jeffrey Katz's family members are depicted on "stumbling stones" in Lembeck, Germany. His relatives owned a home on the property near the stones, before they were evicted in 1942. Jeffrey Katz/NPR hide caption

itoggle caption Jeffrey Katz/NPR

Franz Kafka, who died in 1924, studied Hebrew in Germany during the last two years of his life. This is one of eight notebooks of his Hebrew studies that are part of the Israeli National Library's collection. Israel and an elderly Israeli woman are wrangling over Kafka documents that may include unpublished manuscripts. Natan Dvir/Polaris hide caption

itoggle caption Natan Dvir/Polaris

Historian Tom Holland has adapted Homer, Herodotus, Thucydides and Virgil for BBC Radio. His other history books include Rubicon, Persian Fire and The Forge of Christendom. Sadie Holland / hide caption

itoggle caption Sadie Holland /

Almost 70 years ago, Dorothy Flood was denied access to a train dining car because she was black. Now, after finally dining in a first-class car, she says she'll never ride another train again. Rachel Greiman/Jeremy Bloom's Wish of a Lifetime hide caption

itoggle caption Rachel Greiman/Jeremy Bloom's Wish of a Lifetime

The American Dream has long evoked the idea that the next generation will have a better life than the previous one. Today, many Americans feel that dream is in jeopardy. H. Armstron Roberts/CORBIS hide caption

itoggle caption H. Armstron Roberts/CORBIS

San Francisco's Golden Gate Bridge opened in 1937, connecting San Francisco to Marin County in the north. George Rose/Getty Images hide caption

itoggle caption George Rose/Getty Images

More than 200,000 people crossed the bridge the day it opened in 1937. Many walked. Others ran, tap-danced, roller-skated, unicycled, or strode on stilts. Courtesy of GoldenGateBridge.org hide caption

itoggle caption Courtesy of GoldenGateBridge.org