Her Majesty's Servants You can work it out by Fractions or by simple Rule of Three, But the way of tweedle-dum is not the way of tweedle-dee.
"The Jungle Book"
Rudyard Kipling
His verse is a smart doggerel, and his poem has furnished many stock sayings, as, for example, "'Tis strange what difference there can be 'Twixt tweedle-dum and tweedle-dee."
"Brief History of English and American Literature"
Henry A. Beers
The strange thing was that, contrary to his usual shrewdness, it should have taken Flitter Bill so long to see that the difference between having his store robbed by the Kentucky jay-hawkers and looted by Captain Wells was the difference between tweedle-dum and tweedle-dee, but, when he did see, he forged a plan of relief at once.
"Christmas Eve on Lonesome and Other Stories"
John Fox, Jr.