The first cover shows the McLean Laboratory that burned in 1883. The reverse contains one of the before-and-after advertisements that enliven McLean covers of the 1870's and early 1880's.

A cover with the Grand Tower Block on the front and another version of before-and-after advertising on the back.

An 1880 receipt for an order for almanacs.

The rebuilt McLean complex is shown on this 1890 cover. There is no advertising on the back. Much of that was curtailed after McLean's death in 1886.

A form-postcard from the McLean office in 1896. The company became known as "The Dr. J.H. McLean Medicine Company" sometime in the mid 1880's.

A Twentieth Century McLean cover.