Your letter received on the 29th ult.    From Wordnet, Princeton University. 

Adverb : on the 12th ultimo.    From Dictionary.com. 

Eod'm anno idem rex renovavit eccl'iam Westm 'ult' med'm p 'unam archam.    From Wordnik.com.  [A Chronicle of London from 1089 to 1483 Written in the Fifteenth Century, and for the First Time Printed from MSS. in the British Museum] Reference

Gonsalvi lib.ult. ut ducibus fatale sit clarissimis.    From Wordnik.com.  [Anatomy of Melancholy] Reference

I nodded, as it was indeed a book about the OCK-ult.    From Wordnik.com.  [wilberteets Diary Entry] Reference

I say it's time for the Kid-ult revolution... yeaaah.    From Wordnik.com.  [14th August '03] Reference

I have made here twenty hogsheads of sugar since the 1st ult.    From Wordnik.com.  [The Anti-Slavery Examiner, Omnibus] Reference

This distinguished public man died in New York, on the 22d ult.    From Wordnik.com.  [International Weekly Miscellany - Volume 1, No. 6, August 5, 1850] Reference

He embarked on the 2d ult. from Hongkong in the schooner Omega.    From Wordnik.com.  [Forty Years in South China The Life of Rev. John Van Nest Talmage, D.D.] Reference

Mr. Forman has Received a letter from his wife dated the 29th ult.    From Wordnik.com.  [The Underground Railroad A Record of Facts, Authentic Narratives, Letters, &c., Narrating the Hardships, Hair-Breadth Escapes and Death Struggles of the Slaves in Their Efforts for Freedom, As Related by Themselves and Others, or Witnessed by the Author.] Reference

A desperate fight occurred in Montgomery, Alabama, on the 28th ult.    From Wordnik.com.  [The Anti-Slavery Examiner, Omnibus] Reference

Afer.ca. ult.l. 1. edunt non ut bene vivant, sed ut fortiter laborent.    From Wordnik.com.  [Anatomy of Melancholy] Reference

'Accept my thanks for your two acceptable letters of this 24 and 28 ult.    From Wordnik.com.  [Charles Philip Yorke, Fourth Earl of Hardwicke, Vice-Admiral R.N. — a Memoir] Reference

The Senate on Friday, the 29th ult., confirmed the nomination of the Hon.    From Wordnik.com.  [Scientific American, Volume 17, No. 26 December 28, 1867 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.] Reference

The "Sunday Times" of the 28th ult. has the following paragraph inserted.    From Wordnik.com.  [The Mirror of Literature, Amusement, and Instruction Volume 13, No. 351, January 10, 1829] Reference

We retraced this day much of the same ground which we travelled on the 28th ult.    From Wordnik.com.  [Journals of Two Expeditions into the Interior of New South Wales] Reference

GENERAL: Your communications of the twentieth and twenty-third ult. are received.    From Wordnik.com.  [History of the Negro Race in America from 1619 to 1880. Vol. 2 (of 2) Negroes as Slaves, as Soldiers, and as Citizens] Reference

Absented himself from the Subscriber's plantation, in St. Thomas Parish, the 15th ult.    From Wordnik.com.  [The Journal of Negro History, Volume 1, January 1916] Reference

I have now, Sir, completed my answers to the questions proposed in your letter of the 16th ult.    From Wordnik.com.  [The Anti-Slavery Examiner, Omnibus] Reference

After suffering much from fatigue and hunger they arrived at Canton, overland, on the 17th ult.    From Wordnik.com.  [Forty Years in South China The Life of Rev. John Van Nest Talmage, D.D.] Reference

Boethius l. 5.met. ult, Go now, brave fellows, whither the lofty path of a great example leads.    From Wordnik.com.  [Anatomy of Melancholy] Reference

SIR, -- We have much pleasure in replying to the queries contained in your favour, of the 27th ult.    From Wordnik.com.  [Punch, or the London Charivari, Volume 159, August 25th, 1920] Reference

GENERAL: Your letter of the twenty-eighth ult., in reply to mine of the seventeenth ult., is received.    From Wordnik.com.  [History of the Negro Race in America from 1619 to 1880. Vol. 2 (of 2) Negroes as Slaves, as Soldiers, and as Citizens] Reference

Miss Porter died on the 24th ult., at the residence of her brother, Dr. Porter, in Portland-square, Bristol.    From Wordnik.com.  [The International Monthly Magazine, Volume 1, No. 1, August 1850 of Literature, Science and Art.] Reference

'The packet is just arrived, and I have received your letter of the 26th ult, and likewise one from Lady St. G.    From Wordnik.com.  [Charles Philip Yorke, Fourth Earl of Hardwicke, Vice-Admiral R.N. — a Memoir] Reference

The Lad was seen at Sorel on Friday morning the 29th ult. and there is reason to believe they are both lurking thereabout.    From Wordnik.com.  [The Journal of Negro History, Volume 5, 1920] Reference

We refer to the following passage in its description of an ovation given to Driver OSBORNE, V.C., at Derby on the 31st ult.    From Wordnik.com.  [Punch or the London Charivari, Vol. 147, November 11, 1914] Reference

As you state that you fully approve of the letter sent by General Forrest to me, in answer to mine of the seventeenth ult.    From Wordnik.com.  [History of the Negro Race in America from 1619 to 1880. Vol. 2 (of 2) Negroes as Slaves, as Soldiers, and as Citizens] Reference

Your kind and highly interesting letter of the 27th ult. was rec'd by the last mail, and has been perused with very great pleasure.    From Wordnik.com.  [The Journal of Negro History, Volume 3, 1918] Reference

Secretary Hopkirk's letter of the 27th ult., requesting me to furnish Government with such information as I might be able to afford.    From Wordnik.com.  [Cotton is King, and Pro-Slavery Arguments Comprising the Writings of Hammond, Harper, Christy, Stringfellow, Hodge, Bledsoe, and Cartrwright on This Important Subject] Reference

Several bills tinkering at the patent laws are before Congress, and one of these (House Bill, No. 3,370) passed the House on the 30th ult.    From Wordnik.com.  [Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.] Reference