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'30s dam-building org., 3 letters
300, in Ancient Rome, 3 letters
300, in Roman numerals, 3 letters
Bond rating lower than B, 3 letters
Caesar's perfect bowling score, 3 letters
Depression-era agency: abbr., 3 letters
F.D.R.'s work program, 3 letters
FDR's tree-planting agcy., 3 letters
Fed. agency 1933-1943, 3 letters
Last year of the 3rd century, 3 letters
Municipal bond rating, 3 letters
Nero's perfect bowling score?, 3 letters
New Deal agency: abbr., 3 letters
New Deal org. founded in 1933, 3 letters
New Deal program: Abbr., 3 letters
New Deal work program, for short, 3 letters
Old tree-planting org., 3 letters
Perfect bowling game for Caesar?, 3 letters
Perfect game at Rome Roll-a-rama?, 3 letters
Perfect game for Caesar?, 3 letters
Perfect game for kegler Caesar?, 3 letters
Perfect game for Pontius Pilate?, 3 letters
Perfect score at Colosseum lanes?, 3 letters
Roosevelt's 'Tree Army,' for short, 3 letters
Three hundred, in Roman numerals, 3 letters
Year in St. Marcellinus' reign, 3 letters
Year in the life of Constantine, 3 letters
Youth-employing org. of the '40's, 3 letters
Classic Car Club of America abbr. (1,1,1,1), 4 letters
Red, White and Dead, 4 letters
301, in ancient Rome, 4 letters
First year of the fourth century, 4 letters
Fourth century start, 4 letters
Fourth-centruy date, 4 letters
Year in Diocletian's reign, 4 letters
Mid-4th century date, 4 letters
Fourth-century date, 5 letters
Last full year of St. Julius I's papacy, 5 letters
Mid fourth-century year, 5 letters
Year St. Augustine was born, 6 letters
1980 Olympic silver medal hockey letters, 4 letters
Bygone cosmonaut's insignia, 4 letters
Characters on Soyuz, 4 letters
Cosmonaut's insignia, once, 4 letters
Cyrillic initials on Sputnik, 4 letters
Former USA rival, to them, 4 letters
Hammer and sickle letters, 4 letters
Initials on an old ruble, 4 letters
Initials on Soviet rockets, 4 letters
Initials on Sputnick, 4 letters
Inits. on a Soyuz rocket, 4 letters
Khrushchev's home, in his native tongue, 4 letters
Letters associated with early space missions, 4 letters
Letters from Sputnik, 4 letters
Letters near a hammer and sickle, 4 letters
Letters on a Soviet stamp, 4 letters
Letters on a Soviet uniform, 4 letters
Letters on a Soyuz rocket, 4 letters
Letters on a U.S.S.R. player's jersey, 4 letters
Letters on an old Olympic jersey, 4 letters
Letters on Gagarin's helmet, 4 letters
Letters on old rubles, 4 letters
Letters on old Russian maps, 4 letters
Letters on old Soviet rockets, 4 letters
Letters on some Olympic hockey jerseys, until 1991, 4 letters
Letters on some pre-1991 Olympic hockey jerseys, 4 letters
Letters on some pre-1992 Olympic uniforms, 4 letters
Letters on Soviet postage stamps, 4 letters
Letters on Soviet posters and rockets, 4 letters
Letters on Soviet rockets, 4 letters
Letters on Soviet stamps, 4 letters
Letters on Soviet tanks, 4 letters
Letters on the shirts of the losers of the Miracle on Ice, 4 letters
Letters on the Soyuz rocket, 4 letters
Letters on Yuri Gagarin's helmet, 4 letters
Letters once seen on Soviet rockets, 4 letters
Letters that were often seen in red, 4 letters
Marking on an old MIG, 4 letters
Old cosmonauts' insignia, 4 letters
Old Cyrillic insignia, 4 letters
Old Olympic monogram, 4 letters
Old Russian stamp letters, 4 letters
Olympic hockey team initials, once, 4 letters
One time Soyuz letters, 4 letters
One-time hammer and sickle letters, 4 letters
Onetime cosmonaut's insignia, 4 letters
Onetime inits. at the Olympics, 4 letters
Red letters, before 1991, 4 letters
Soviet Union's abbr., 4 letters
Soyuz rocket letters, 4 letters
Spacecraft letters, once, 4 letters
U.S.S.R., in Russian, 4 letters
U.S.S.R., to a Soviet, 4 letters
USSR, to the locals, 4 letters
Don't procrastinate, 9 letters
This clue squared, plus itself, 5 letters
Year Constantine the Great became emperor, 5 letters
310 in the reign of Constantine, 4 letters