To make you laugh is our delight! : Grand concert to be given at Washington Hall, south-west corner of Eighth and Spring Garden Streets, on Wednesday evening, May 20, 1863, for the benefit of Billy Martin of the Philadelphia Minstrels, on which occasion the Philadelphia Minstrels and a host of volunteers will appear. ... Also, the popular Harmonia Orchestra will play a host of musical selections. Programme. ... Prestidigitation by the great William Miller. ... The performance will conclude with an Ethiopian sketch, by Andy Williams, entitled The black tailors ... Admission, 25 cents Doors open at half-past 7 o'clock. Curtain rises at quarter before 8. Polite ushers will be in attendance. Front seats reserved for ladies. / Andy Williams, manager. The Philadelphia Minstrels can be engaged, by applying at the drug store, Sixth and Girard Avenue.