The first image has a different letter on top, because they were filed together originally. There doesn't appear to be any connection.
Transcription
"Yaringa"
28/4/35
Dear Mr Hall,
Just a short note in a hurry. As you will note by the address, am at 'Yaringa' as [? Norman] is off to Perth. Allan will be back next week-end.
Did you, perchance, over-carry that parcel of [? A.C.R's] which I gave you, he is going [? up] on the mail & wants those things, so if you have them could you formward them per 'Mail'
Yours faithfully
[?]