The phrase 'partnership letter' is correct and usable in written English.
It can be used when two parties (e.g., businesses, organizations, etc.) are formally entering into a partnership, to refer to the document in which they outline the details of that partnership. For example: "Both sides signed the partnership letter, officially cementing their agreement."
A collection of his early letters, most from the pre-Berkshire days, when Buffett ran an investment partnership for family and friends, has now been published in Jeremy C. Miller's "Warren Buffett's Ground Rules: Words of Wisdom from the Partnership Letters of the World's Greatest Investor" (HarperBusiness).
The Great Western Partnership's letter will tell UK transport minister Phillip Hammond it would provide an essential economic lifeline.
Organizers said the levy would allow the bureau to hire a new president, move the bureau office to a more "prime" location, market Costa Mesa as the "heart of Orange County" and create special events and partnerships, the letter states.
Members of the partnership wrote the letter to the governor that strongly supported reinstating a commuter tax.
Silicon Valley and privacy groups do not always agree over privacy matters, making their partnership for the letter noteworthy.
This hodgepodge of related material might include resumes, credit histories, industry studies, blueprints, advertising materials, press coverage, copies of leases and contracts, letters of intent from future customers, patent and trademark registrations, partnership agreements and letters of incorporation.
After Google and Yahoo announced an advertising partnership in June, letters from consumer groups and advertising associations poured into government regulators, urging them to support or block the proposed deal.
Leaders of many groups within the partnership have signed a letter to the Big Three's chief executives asking for improvements in fuel economy.
"During the I.P.O., Catalytica did not execute the I.P.O. in a manner consistent with the strategy outlined to the investors," Mr. Fastow wrote in the April 30 letter to partnership investors.
The writer described in detail problems with Enron's partnerships, problems that the letter claimed would cause huge financial upheavals at the company in as little as a year.
