EXHIBIT 15.1

May 7, 2010

Vornado Realty L.P.

New York, New York

We have reviewed, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the unaudited interim financial information of Vornado Realty L.P. for the periods ended March 31, 2010 and 2009, as indicated in our report dated May 7, 2010; because we did not perform an audit, we expressed no opinion on that information.

We are aware that our report referred to above, which is included in your Quarterly Report on Form 10-Q for the quarter ended March 31, 2010, is incorporated by reference in the following joint registration statements of Vornado Realty Trust and Vornado Realty L.P.:

Amendment No. 4 to Registration Statement No. 333-40787 on Form S-3

Amendment No. 4 to Registration Statement No. 333-29013 on Form S-3

Registration Statement No. 333-108138 on Form S-3

Registration Statement No. 333-122306 on Form S-3

Registration Statement No. 333-138367 on Form S-3

Registration Statement No. 333-162775 on Form S-3

We also are aware that the aforementioned report, pursuant to Rule 436(c) under the Securities Act of 1933, is not considered a part of the Registration Statement prepared or certified by an accountant or a report prepared or certified by an accountant within the meaning of Sections 7 and 11 of that Act.

/s/ Deloitte & Touche LLP

Parsippany, New Jersey