在使用 tapply绘制一系列histogram图时怎么给每个图添加相应的标题

tapply(old$price,old$maker, hist, xlab ="Price, dollar", ylab = "Frequency", xlim = c(0,60000),main = paste("Histogram"), breaks = breaks)

这里是按照older$maker的levels画的图，怎么把相对应的level paste到标题中