>> on american history tv, on c-span3, this afternoon. >> memoirs you have to be wary of, because they are bound to be self-serving to a degree. also, most of these people did not want to disclose too much. in some cases, they might ask a try to mislead people. theistorians talk about techniques used by intelligence services to gather intelligence, dating back to the cold war, and how it has changed since the 9/11 terrorist attacks. at 6:00, and examination. >> many thought it was really happening, a full happening. the dollar was a full-scale

black uprising in a panic. pistolsblackman with and clubs formed spontaneously downtown, marched to the scene of the shootout and began shooting, beating every black person they could find. >> the 1866 write that resulted in the deaths of dozens of african-americans. colored troopsof stationed new the city. iversenore 9:00, walter will offer a examination of benjamin franklin. someone he called america's character. >> his abuse would be the backbone of the new economy. indeed, one of the things that his group did was they made a set of rules. it was on how to be a good startup entrepreneur and innovator.

at 10 a clock,ng on road to the white house rewind. >> in the music of our children, we are told to everything there is a season, and there is a time to every person under heaven. for america, the time has come at last. >> you know that every politicians promise has a price. the taxpayer pays the bill. the american people are not going to be taken in by any scheme where the government's money with one hand and takes away with the other. 1972 republican and democratic national conventions, with richard nixon accepting the gop nomination for the second term. to our complete schedule, go www.c-span.org. house road to the white coverage continues in cleveland,

with a live coverage of the republican platform committee. tuesday,ontinue on july 12, at 10:00 eastern. the platform committee is responsible for drafting and cementing the party platform to delegates. live coverage will be on c-span, c-span radio, and on www.c-span.org. >> this year, c-span is touring cities across the country exploring american history. next, our recent visit to provo, utah. you are watching american history tv. all weekend every weekend on c-span3. >> it never gets old, coming into a dinosaur museum or walking back in collections. it is always a sense of discovery. we as paleontologists -- that is what i guess we feed off of. the sense of discovery.

whether it is in the field of the collections or in the lab in preparation, we are always discovering things. even when you walk through a museum that has mounted dinosaurs, you see things you've never seen before. -- you have never seen before. it is discovery all over again. >> james jensen was a really unique character. he went about things his own way. he left high school without graduating. the interesting thing about it is that he did not really like to be at one place for very long, because he liked learning. he liked the adventure. he liked different places all the time. every job he had sort of lead to something else. his sense of adventure was always key, and he was always up

-- he was always out collecting things. he amassed such a large collection, probably as large as barnum brown, and, if things got -- as things got prepared, it was understood that a lot of these animals were new to science. he collected at least eight new species of animals, dinosaurs and pterosaurs, and some of the largest dinosaurs in the world at the time. he became world-famous. he was known as, "dinosaur jim." behind me is alosaurus and cantosaurus. these are the two mounted dinosaurs that he was contacted to mount in 1961.

these animals were found in utah in a quarry. jim jansen was brought into mount them,ht in to to make casts and mold original bone, and put them into mounted dinosaurs. when mounting the dinosaurs, jim jensen would bore holes through these casts. the armature itself, the metal rods that supported the animal, is hidden within the bounds. along the vertebrae column and within the legs, the armatures are hidden within the lifelike bones. when you can hide the armature and the steel supports the -- the steel supports the animal , looks more alive in the sense that you get the feeling that these are bones, but it brings life to these bones.

where you are at now is the collections room. this is where all the bones of -- all the bones that have been prepared get brought into. most of these bones here that you see were collected by jim jensen. we are still preparing bones that he collected. we are still studying them. some of these things are still laying in a plaster jacket that we collected while we were out in the field. the bone is petrified. that means it is somewhat turned to rock. that does not mean it is all rock. some of these bones are as soft as graham crackers. it takes a special care to stabilize and glue these bones together. in addition, these bones are all fractured up and placed in the

-- or in into the rock the rock itself. it is our job to take the rock away and to keep the bone in its best condition as we can. these bones have gone through a very diverse history. some of these animals, when they died they rotted. they were scavenged on. they were trampled on. history thatt of goes on in these bones. those are just some of the studies we do here. some of these very large loans, like you see here, we have one neck vertebrae of a supersaurus. a lot of this bone is smashed. it is because the stones were nomadic in life. they had chambers within them

that were filled with air, much like birds have today. this four foot neck vertebrae, off of a supersaurus, was much lighter than it is today. it is all rock now. all these empty spaces have been filled in with minerals. to understand dinosaurs, it helps us to understand birds today. what you see in a museum is just sort of the tip of the iceberg of what we go out and collect. a -- collect. a lot of the things that we collect out in the field are not nicely articulated dinosaurs. we find a lot of parts. museums work together, and we so we canasts sometimes mount a dinosaur. the important thing is not so

much a mounted dinosaur, even though that is very cool. to science, even finding parts helps us answer questions of what life was like maybe some 150 million years ago. >> our city for staff recently traveled to provo, utah. in order to learn more about the other stops at our tour, you can go to www.c-span.org. you are watching american history tv. all weekend, every weekend on c-span3. >> in less than two weeks, c-span will have live coverage of every minute of the 2015 republican national convention, followed by the democratic national convention. every saturday night, we will take a look at the presidential candidates that went on to win

their party's nominations. tonight, we will focus on the comment -- incumbent candidates. the 1954 democratic convention with lyndon johnson. the 1972ixon at republican convention at miami beach. the 1980 convention with jimmy carter. the 1984 convention in dallas with ronald reagan. the 1992w. bush at republican convention in houston. bill clinton in chicago for the 1996 democratic convention. also, the 2004 republican convention with george w. bush. tonight 8:00 eastern on c-span. we've -- if we- are going to invest the money into education, we have to

change the way we deliver education. >> sunday night on q&a, gerard robinson will talk about the state of education in the united states. >> there is a body of literature that is clear about a certain to simply accept students who have not fulfilled that regular aggregation is doing a great disservice to them and it is selling the effort of affirmative action. >> sunday night at 8:00 eastern. >> you are looking at a time-lapse view recorded by the library of congress showing the process of constructing the exhibition, "jacob riis: revealing how the other half lives." next on american history tv's artifacts, we learn about the life of the danish born journalist, social reformer, and