This section is from the book "The Law Of Contracts", by William Herbert Page. Also available from Amazon: Commercial Contracts: A Practical Guide to Deals, Contracts, Agreements and Promises.
A. B., lessor, conveying the following described lands in the County of --------,
State of ---------:
Now, therefore, for and in consideration of --------- dollars, the receipt of which is hereby acknowledged, the said C. D. hereby bargains, sells, transfers, assigns and conveys all the right, title and interest of the said lessee in and to said lease, subject to the approval of the Secretary of the Interior, to E. F., said assignment to be effective from date of approval hereof by the Secretary of the Interior.
In witness whereof, etc.
See references under 5 3791.
For form of oil and gas lease, see Sec. 3887, 3888.