ial " ▁after ▁the ▁ 1 0 0 th ▁anni versary ▁of ▁the ▁driving ▁of ▁the ▁Golden ▁S pi ke ▁in ▁ 1 8 6 9 , ▁which ▁sign ified ▁the ▁completion ▁of ▁the ▁Trans cont inental ▁Rail road . ▁They ▁are ▁unique ▁in ▁that ▁they ▁are ▁actually ▁two ▁power ▁units ▁on ▁a ▁single ▁ 9 8 - foot ▁frame , ▁and ▁are ▁noted ▁as ▁being ▁the ▁largest ▁dies el ▁locomot ives ▁in ▁the ▁world . ▁The ▁ 6 9 1 6 ▁is ▁one ▁of ▁th ir teen ▁surv iving ▁Cent enn ial s . ▁ ▁In ▁popular ▁culture ▁ ▁UP ▁ 6 9 1 6 ▁was ▁featured ▁on ▁the ▁cover ▁of ▁the ▁March ▁ 1 9 8 5 ▁issue ▁of ▁Pacific ▁Rail News . ▁The ▁unit ▁served ▁as ▁the ▁prototype ▁for ▁an ▁O - scale ▁br ass ▁model ▁released ▁by ▁A jin ▁and ▁imported ▁to ▁the ▁United ▁States ▁by ▁Over land ▁Mod els ▁in ▁ 1 9 9 9 . ▁ ▁Gallery ▁ ▁See ▁also ▁Union ▁Pacific ▁ 6 9 3 6 ▁- ▁another ▁surv iving ▁D DA 4 0 X , ▁and ▁the ▁sole ▁oper ational ▁unit . ▁ ▁References ▁▁ 6 9 1 6 ▁Category : D - D ▁locomot ives ▁Category : E lect ro - M ot ive ▁Division ▁locomot ives ▁Category : D ies el - elect ric ▁locomot ives ▁of ▁the ▁United ▁States <0x0A> </s> ▁Day ▁is ▁a ▁mar ble ▁sculpt ure ▁by ▁Michel ang elo , ▁dat able ▁to ▁ 1 5 2 6 –