Years ago, in the heyday of the Viking landigs, we recieved a letter of this type from a student who told us he was writing a report on "The Mountains and Valleys of Mars". His questions to us were phrased in such a manner as to leave no doubt that he wanted the report written FOR him. Our reply went something like.... Dear Student Thank you for your recent letter. Best of luck on your upcoming report, "The Mountains and Valleys of Mars". You are correct, our position gives us a unique look at the subject, and it is with great pleasure and deep humility that we tell you that Mars does indeed have mountains and valleys. Yours truly, Viking flight team.
(From the "Rest" of RHF)