"CASH FOR NEGROES.--The subscriber wishes to purchase twenty or thirty negroes, and will pay the highest market price. Persons having negroes to sell will find it to their interest to give him a call before they sell. I can be always found at my residence, corner of Seventh-street and Maryland Avenue. All communications through the post-office will be promptly attended to. WM. H. RICHARDS." In a still later number, July 22, 1843, appears this:-- "CASH! CASH!--The subscriber wishes to purchase any number of negroes for the Southern markets. The subscriber will at all times give the highest market price in cash for likely negroes, mechanics and house servants included. Himself or agent can at all times be seen at the corner of Seventh-street and Maryland Avenue. All communications will receive prompt attention. THOMAS WILLIAMS." The following are samples of some of the advertisements of Maryland traders. The original of all of these advertisements will be found at the Anti-Slavery office, Boston. We begin with one of Hope H. Slatter:-- "NEGROES WANTED.--Having returned from New Orleans, I will now pay the highest cash prices for all likely negroes that are slaves for life and good titles. All communications will be promptly attended to. HOPE H. SLATTER, Pratt-street. "N.B. On the 7th day of June, 1844, Jonathan M. Wilson (my former agent), by mutual consent, withdrew from my employment, and is no longer my agent. HOPE H. SLATTER. "Baltimore, July 29." "CASH FOR FIVE HUNDRED NEGROES, at the old establishment of Slatter's, No. 244, Pratt-street, Baltimore, between Sharp and Howard-streets, where the highest prices are paid,--which is well known. _We have large accommodations for negroes, and always buying._ _Being regular shippers to New Orleans_, persons should bring their property where no commissions are paid, as the owners lose it. All communications attended to promptly by addressing H. F. SLATTER." "NEGROES WANTED.--I have removed from my former residence, West Pratt-street, to my new establishment on Camden-street, immediately in the rear of the railroad depot, where I am permanently located. Persons bringing negroes by the cars will find it very convenient, as it is only a few yards from where the passengers get out. Those having negroes for sale will find it to their advantage to call and see me, as I am at all times paying the highest prices in cash. J. S. DONOVAN, Baltimore, Md."