Thank you for submitting your items for appraisal. The Washington & olive-branches 1 cent stamp was first issued in 1912 and was a standard denomination, sold by the millions and therefore of little to nothing value. The other photos also seem to show very much standard postage stamps of very little value. Judging from the sparse information provided I would assume that this was more of a by chance compiled collection and not a serious stamp collection. The sentimental value for you will be much higher than the monetary value. For further information check out the Scott or Michel postage stamps catalogues. But keep in mind, that by all likelihood the stamps in your possession will be the ones of low value.