The envelope carries a 2 cent stamp.  Two Postmarks: Pittsburgh, June 8, 1885 and Washington, D.C.  June 9, 1885.  Note says Not at the Obsy (Observatory) Prof (Bart Mitten ?) 6-13/85  and (OK) 6/19/85

The back of the envelope has three postmarks Washington, Rec’d Jun 9 9 AM 1885,  Box Department Jun 9 11 PM and Carrier Jun 9 12 M


My Dear Prof Mendenhall

            I have had your grating for Sir Wm Thompson some time now after four attempts to rule it.  It’s a glorious one for 2 or 3 spectrum on one side.  I wrote to Prof Robinson a week ago to get your address but he must be away, as I rced no answer.  Yesterday, I met Mr. Young and I asked him if he knew your address, and fortunately rced an affirmative reply.  The grating is in a mahogany box lined with velvet but I am not sure this is the best thing though the velvet does not touch the ruling.  Now will you please inform me of your wishes in reference to the grating.   Shall I ship it to you or Shall I send it to Sir Wm Thompson whichever way you like.  If you send it I advise you to have it put first in a tin box & soldered up.  This is the way I have usually sent them across the sea.  I shall await your reply and will be pleased to carry out your wishes.  I spent a pleasant afternoon a few weeks since with Mrs. Draper and was delighted to learn that she had offered you the position of “charge de Affair” in the Obs & Laboratory of our dear departed Dr. Draper- but- sorry to learn that you had not found it convenient to accept it.  The Dr. was a very dear friend of mine in my early studies and the last time I went to Hastings I could not suppress the tears as I looked at the deserted Observatory and Laboratory of two such Grand Men As the Dr. and his father, whose writings I consider equaled by none.   I could write more on this Subject, but must desist.  Wishing for you the best of health and continued success in your researches  I am faithfully yours  JA Brashear