Crossword clues for 51, for one 4 letters:AREA51, for oneAREA51 is oneAREAMysterious 51, for oneROLE51 Down is oneEXAM51 Across, for oneAREA51 is a notable oneAREA51 is a mysterious oneASPSOne of these lurks in 20-, 30-, 41- and 51-AcrossSANTAWith 51-Down, one of three historic shipsKENWith 51-Down, "One Flew Over the Cuckoo's Nest" authorMISSOREGONOne of 51 in Atlantic CityTHEME51-Down needs oneGOD51 Across, for oneTHESIXTHSHEIKSWith 34-Across, one example of 51-AcrossPET51-Across, for oneINSECT51-Across, for oneDELEGATEATLARGEOne of many at 51 Across.AFBArea 51 is administered by one (or so we think...): Abbr.DEALEROne standing in a 51 AcrossCATERPILLAROne that becomes a 51-AcrossTYPEOFSCULPTURE17, 21, and 51 Across all finish with oneWHALE51-Across was obsessed with oneSTONESKIPPERRussell Byars is one: He set the Guinness World Record of 51 times from the shore of the Allegheny River on 7/19/2007TONIMORRISONWriter of the novels whose one-word titles begin 18, 24, 39 and 51 AcrossBLINDSPOTSAreas about which one is uninformed, or something 17-, 25-, 34- and 51-Across collectively have?HOLDITStop! ... or what one can do with the start of 17-, 25-, 38-, 51- or 60-AcrossBREAKFASTBUFFET18-, 24-, 51- and 58-Across can aptly be found at a continental oneSEVENWONDERSWith 51-Across and 15-Down, group in which [see circled letters] is the only one still largely intactPARTINGSHOTBit of one-upmanship ... and what can be found at the end of 18-, 24-, 39- and 51-Across?