I only really caught on to the robbery that took place at 0330, but that was a mile and a half south of boise if I remember reading that right, how ever the 50k that was talked about in your above picture says the robbery took place 6 miles north of boise city, so what's 6 miles north of boise now? And it needs to be noted that he escaped to the south side of the river with the gold, now id imagine 50k in gold is pretty damn heavy, even more so when wounded, so if I were a wounded robber with a heavy ass sack of gold id be hiding it asap as soon as I was well out of sight, now they said they found him a few hours later dead on a sand bar, they didnt say there was any gold wih him so there fore he hid it before he reached the sand bar on the boise river, a few hours is a long time to be walking wounded, so my theory here is that the guy either buried it in the bank of the river where it was easy to dig as soon as he reached it or, he tossed it into a badger hole or something of the sorts... what we need to do here is locate 6 miles north of 1883 boise on the south side of the river. Thatd be the place to start, so lets start with figuring out where 1883 boise was. Im sure where the robbery happened has since been built over, and more then likely where he met the river has something built on it, so that leaves us with few options on where it could be buried, im sure my mom has something on old boise, she has books for days on idahos history, also we can try the library for old city maps and newspapers, doubt they will have anythng from 1883 but you never know.