What was the gold rush?

Holdings

hidmidmiidnidwidlocation_codelocationbarcodecallnumdeweycreatedupdated
9988939777282268410847303383LIVE285T 26293979.4 HOL979.415754856551709567815
18028040497632276410847303383PAVE362PAVE24237979.4 HOL979.415774597521709567815
45781342684332270410847303383LRYE278LRYE002911979.4 HOL979.415774597521709567815
68030144258932307410847303383FAJA175FAJA221154979.4 HOL (WHAT?)979.415798937721736518457
73409944755242318410847303383PEHH369PEHH109644979.4 HOL979.415798937721736518457
77750045153492321410847303383PESC372PESC30377979.4 HOL979.415798937721736518457
81005745455692325410847303383PIJR384PIJR130201979.4 HOL979.415798937721736518457
82859445624502326410847303383PIMC385PIMC351361979.4 HOL979.415798937721736518457
87568946040342292410847303383BRFR113BREL068982979.4 HOL979.415798937721736518457
93517646558712333410847303383RHFY403RHFY150365979.4 HOL979.415802161721736518457
98024046978192339410847303383RHWI409RHWI036540979.4 HOL979.415802161721736518457
145308750890552340410847303383WEDW485WEDW200447979.4 HOL979.415814652241736518457
147959051136542342410847303383WEKN486WEKN800224979.4 HOL979.415814652241736518457
149394551269082343410847303383WEKS487WEKS066725979.4 HOL979.415814652241736518457
150616151379802344410847303383WEPN488WEPN122727979.4 HOL979.415814652241736518457
153386651635332346410847303383WESE490WESE063680WHAT GOLD.RUSH100015814652241736518457
156322351909092348410847303383WEST493WEST106907979.4 HOL979.415814652241736518457
156322451909092348410847303383WEST493WEST107017979.4 HOL979.415814652241736518457
170409253166912430410847303383BPBA116BPBA036170979.4 HOL979.415825759371742569409
172079953308152431410847303383BPFW119BPFW40690979.4 HOL979.415825759371742569409
172080053308152431410847303383BPFW119BPFW40691979.4 HOL979.415825759371742569409
195529455407932449410847303383GRBH236GRBH126932979.4 HOL979.415825759371742569409
202950756077422457410847303383GROL244GROL401542979.4 HOL979.415825759371742569409
204125256187772458410847303383GRPB247GRPB401552979.4 HOL979.415825759371742569409
215711757150322465410847303383HIWA258HIWA605152979.4 HOL979.415825759371742569409
352387368910522314410847303383HFMA266HFMA002731979.4 HOL979.416427897121736518457
352387468910522314410847303383HFMA266HFMA004402979.4 HOL979.416427897121736518457
387236571552652462410847303383HIMW256HIMW063559979.4 HOL979.417093078551742569409