Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
by letter dated
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "by letter dated" is a correct and usable part of a sentence in written English.
It is typically used to indicate the specific date of a letter or document that is referenced in the sentence. Example: "I received your response to my request by letter dated October 15, 2021."
✓ Grammatically correct
Academia
News & Media
Science
Alternative expressions(5)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
13 human-written examples
By letter dated August 4 , 1988 management informed the outside directors of proposed corporate governance provisions to be discussed with Warner.
Academia
But at least some people who wrote on his behalf were sent a personal request by letter, dated Dec. 1, 2000, from Mr. Rich, who sent it by courier.
News & Media
By letter dated May 6 , 1986 appellants' counsel informed us that Senate President Russo and General Assembly Speaker Hardwick were withdrawing the legislature's appeal, but that Karcher desired to continue the appeal.
Academia
By letter dated December 27 and received by respondent before noon on December 28, the employees served notice that a strike would take effect December 28 at six o'clock in the evening.
Academia
By letter dated February 14 , 1966 Acousticon, writing directly to the defendant, informed him that Model A-665 was an improved version of Model A-660, and that they would either replace the model that had been delivered to him or would obtain Model A-660 for him.
Academia
Russian tycoon Boris Berezovsky, who is wanted in his homeland on charges of fraud, claimed a major victory today as he won political asylum in the U.K.. "It is true [that he has received asylum] by letter, dated September 9, from the Home Office," his spokesman Vladimir Voronkov told Reuters by telephone from London.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
47 human-written examples
By letters dated 17 November 1994 and 24 November 1994, Mr. KrIamer (DG XI) and Mr. Landaburu (DG XVI), informed the applicants of the rejection of their request.
Academia
The purchasers decided not to take title to the condominium because Euel D. Vines was transferred by his employer to New Jersey; the Vines so informed the seller by a letter dated January 4 , 1974
Academia
I was very saddened by your letter dated October 21 , 2008 giving me 30 days to recant my belief and public statements that support the ordination of women in our Church, or I will be excommunicated.
News & Media
"By her solicitors' letter dated 2 June 2009 Mrs Horton has admitted that payments totalling £128,910 were made to accounts in the name of the florist business, and in different versions of her married and maiden names".
News & Media
However contained in a 1987 book by Teller, a letter dated July 2 , 1945from Teller to Leó Szilárd states in part: :"...Our only hope is in getting the facts of our results before the people.
Wiki
Expert writing Tips
Best practice
Use "by letter dated" to clearly and concisely specify the date of a letter you are referencing, especially in formal or legal documents to ensure precision.
Common error
Avoid using incorrect prepositions like "in letter dated" or "on letter dated". The correct preposition is "by" to indicate the means of communication.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "by letter dated" functions as a prepositional phrase that modifies a verb or noun. As Ludwig AI confirms, it specifies the method and time of communication, adding precision to the sentence. Examples show it pinpointing when information was conveyed or an action was taken.
Frequent in
News & Media
40%
Academia
40%
Science
13%
Less common in
Formal & Business
3%
Wiki
3%
Reference
0%
Ludwig's WRAP-UP
In summary, "by letter dated" is a grammatically sound and useful phrase for clearly specifying the date of a letter within a sentence, as highlighted by Ludwig. Although not overly common, it's particularly appropriate in formal, professional, or academic contexts where precision is valued. As the examples show, the phrase appears frequently in news and academic publications. While there are alternatives, "by letter dated" provides a direct and unambiguous way to reference a written communication's date, according to Ludwig AI.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
in a letter of
Replaces the preposition "by" with "in", creating a slightly more formal tone.
letter of
Omits the preposition entirely, making the phrase more concise.
dated letter
Rearranges the word order to emphasize the date.
letter from
Shifts the focus to the sender of the letter.
as per letter dated
Adds a business-like tone using "as per".
according to a letter of
Adds detail of the source of information.
in the letter dated
Specifies that information is found within the letter.
the letter bearing the date
Adds more formality and a descriptive element.
under cover of letter dated
Emphasizes the letter's role as a means of conveyance.
reference is made to letter of
Emphasizes the act of referring to a specific letter.
FAQs
How can I use "by letter dated" in a sentence?
You can use "by letter dated" to specify the date of a letter you are referencing, for example, "I informed him of the decision "by letter dated" March 15, 2024".
What can I say instead of "by letter dated"?
Alternatives include "in a letter of", "letter of", or "dated letter", depending on the desired level of formality and emphasis.
Is it more appropriate to say "in a letter dated" or "by letter dated"?
Both are acceptable, but ""by letter dated"" is slightly more common and concise, particularly in formal contexts. "In a letter dated" can be used for a slightly softer tone.
What's the difference between "by letter dated" and simply stating "the letter was dated"?
"By letter dated" is used to actively reference a letter and its date within a sentence, whereas "the letter was dated" is a statement about the letter's date, often providing context rather than direct reference.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested