| RACERIOT | One of more than 150 that occurred in the US during the summer of 1967 |
| PSALM | Any of 150 that constitute an Old Testament book |
| BERMUDA | British overseas territory consisting of a group of more than 150 coral islands in the NW Atlantic (7) |
| WINCHESTER | Lever-action repeating rifle widely used in the US during the second half of the 19th century (10) |
| LIBERTYSHIP | Prefabricated vessel, one of many massproduced in the US during the Second World War (7,4) |
| TONGA | A kingdom occupying an archipelago of more than 150 volcanic and coral islands in the South West Pacific (5) |
| ATLANTICCITY | Gambling resort, the most popular tourist destination in the US during the late 1980s (8,4) |
| SPEAKEASY | Illicit liquor shop or drinking establishment operating in the US during the Prohibition era (9) |
| JITTERBUG | Frenetic swing dance originating in the US during the 1930s (9) |
| VERACRUZ | City and port on the Gulf of Mexico occupied by the US during the Tampico Affair of 1914 |
| ELMSTREET | One of more than 5,000 in the United States, per the Census Bureau |
| TIENTSIN | Relief of ____, battle of the Boxer Rebellion that occurred in July 1900 (8) |
| REUNIFICATION | Process that occurred in Germany after the fall of the Berlin Wall (13) |
| SUBGLACIAL | More than 150 miles (about 240 km) long with a maximum width of about 31 miles (50 km), Lake Vostok is the largest lake in Antarctica, and the largest __________ lake known (10) |
| FREIGHTCAR | One of more than 1.7 million operating in the United States, along with locomotives |
| GREATFIRE | Short name of a major disaster that occurred in London in 1666 (5,4) |
| RICHMOND | City that became the capital of the Confederate States of America during the American Civil War (8) |
| USSR | Communist nation that opposed the US during the Cold War: Abbr. |
| LEGO | One of more than 245,000 in a Christmas tree at a California theme park |
| IRS | Government agency that processed more than 150 million individual returns in 2017: Abbr. |
