On February 23, 1870, the Little Miami Railroad leased in perpetuity, renewable forever, all of its assets, including the DX&P, the D&W, and the C&X, to the Pittsburgh, Cincinnati and St. Louis Railway, retroactive to December 1, 1869. The rent was $480,000 per year. The PC&St.L was part of the Pennsylvania Railroad, and the Pennsy co-signed the lease, guaranteeing the payments and other conditions. At the time of the lease, the LMRR system consisted of of track. The system had cost $3,995,165 in track, right-of-way, and facilities, plus $1,065,968 in rolling stock, machinery, and a boat on the Ohio River. On August 28, 1890, the PC&St.L. merged with several other railroads to emerge as the Pittsburgh, Cincinnati, Chicago and St. Louis Railway.
