Old Zacky come to Utah, way back in 73 A right good Mormon gentlemen and a bishop too was he He drove a locomotive for the Denver and RG With women he was popular, and as active as can be And when he whistled woo woo mamma'd understand That Zack was heading homewards on the Denver Rio Grande Oh Zacky had at least one wife in every railroad town No matter where he stopped at night he'd a place to lay 'em down When his train was on the move he'd want to girls to know So as he passed each wife's abode the whistle he would blow And when he whistled woo woo mamma'd understand That Zack was heading homewards on the Denver Rio Grande Oh Zacky claimed to love them all, and love them all the same But there was one he loved the most, he blushed to speak her name So when he passed her home he'd blow the whistle special loud She'd climb the porch, she'd blow a kiss, and Zack was extra proud And when he whistled woo woo mamma'd understand That Zack was heading homewards on the Denver Rio Grande One day he got a letter from the AT and Santa Fe They offered him a better job and a whopping raise in pay Old Zack says no I'll never go and leave my wives behind My engines getting much to slow to start another line And when he whistled woo woo mamma'd understand That Zack was heading homewards on the Denver Rio Grande