The first letter is written by a certain Mrs. Eberspacher from Augsburg, she seems to have been a taylor at that time. She writes to a Mrs. Eiband whom she had visited in a village near a mountain called Auerberg (Allgäu) some time ago. As I understand it she had promised to send Mrs. Eiband clothes and dinnerware but she couldn't get her hands on anything, because due to the war there isn't really anything to find in the shops.

She's very busy tayloring at that time for the same reason (it's close to christmas), because since people can't find anything in the shops they come to her to order things for dollhouses (like dresses and curtains, I guess).

She's also been ill for 10 days, foodpoisening by fish she ate.

I guess it has been kept in the envelope addressed to Karl Eiband, (the address fits some details told in the letter) that follows this letter, but the letter that had been sent in that envelope had actually been 'Feldpost' (a war letter) by someone called Geisenhof.

The following letters except for the postcard have been written in Sütterlin https://en.wikipedia.org/wiki/S%C3%BCtterlin and I have a hard time deciphering it, but the next letter is written by someone whose brother just had been killed in Russia. It was his third brother who had already died.

He thanks for condolences and says that he's sorry that he hadn't been able to partake in the funeral service, but while he tried everything, he wasn't able to leave wherever he was at that time, the rest of the letter is really hard to decipher for me.

The postcard is written by an Otto Ziegler from Würzburg (but it's 'Feldpost', so he was maybe on furlough, in hospital or he was not a front line soldier) to the family of a teacher ('Hauptlehrer' = Head/Main Teacher) called Beitinger.

He thanks for a postcard he received from their holiday and tells them that he had been on a beautiful outing.

The next letter again is addressed to the Eiband family. It's by their son Rudi who's 'in the East' and I couldn't decipher it if my life depended on it.

The last letter, again to the Eibands, is even worse, I can't even tell who wrote it. I only know, that this is no 'Feldpost'.

I hope I was able to help you well enough to make the decision, if you follow /u/commiespaceinvader's advice.

He really has a point, if you want to know more you should try to find better suited help, very few people are still able to read Süttelin.