The freight pictures cited above were probably from the RR Club of Chicago's way freight fan trips, that went up to Oregon, IL, and with 2-8-2 4960 on the branch to Mt. Morris and Cable Printing. They actually did a bit of pick up/setout business on these trips. Believe 4-8-4 5632 was too heavy to go up to Mt. Morris. I had the good fortune to ride the 1960 version of the trip with the 4960.
The Colorado & Southern experienced two disasterous wrecks in Sept 1958 which required a desperate call to parent CB&Q's headquarters in Chicago due to the destruction of a number of diesels. The Q sent out 5 O1a 2-8-2's to substutute for the diesels. The first wreck was when two diesel powered freights collided head-on at Chugwater, WY. The second was when northbound passenger train #30 collided head-on with freight train #77 at Broomfield, CO. This wreck resulted in the death of engineer Fred Tingle, who started railroading on the South Park narrow gauge in the early part of the century, and two other railroaders. Addtionally the Burlington experienced two wrecks on the Beardstown coal line, which resulted in the use of substituted steam through early 1959. Employed were 5 O1a 2-8-2's and 2-10-4's #6315 and #6318.
#4960 was used in the Spring of 1965 at Savanna, IL when the Mississippi flooded the Burlington's trackage, shuttling both passenger and freight trains through the flood waters. Subsidiary Fort Worth & Denver loaned a USRA 2-8-2 to the Texas & Pacific for flood duty on the Red River in 1957 and then sold an older 2-8-2 to the T&P for flood duty in 1958; it was used on only one occaision by the T&P after the sale.
Re Rusty's comment about the Burlington's 1956 use of steam being the product of crop failure in Russia was apochryphal (no disrepect to Rusty). Jim Shaugnessy came up with that explanation in his photo essays of Burlington 4-8-4's taken in Nov 1956. The seasonal operation of Burlington steam was a normally anticpated event on the railroad, which kept about 100 steam locomotives in reserve for the fall rush of wheat and sugar beets. Beyond 1956, Burlington had all 6 of their oil burning 4-8-4's based in Lincoln, NE running in the summer and fall of 1957 (plus 2-8-2's switching). And Fall 1958-early 1959 saw the last use of Burlington steam in regular service - again of locomotives held in reserve for just such occaisions. C&S and FW&D regular steam operation wrapped up in the spring of 1959.
The CB&Q and it's two subsidiaries were probably the best friends of steam locomotive enthusiasts in terms of the number of steam locomotives employed on fan trips. A total of 25 steam locomotives were used through the years on excursions, starting with stainless steel streamlined 4-6-4 #4000 in 1937! These locomotives ranged from 4-6-0's, a 4-6-2, a 2-6-2, 2-8-0's, 2-8-2's, 4-6-4's, 4-8-4's, 2-10-2's and a 2-10-4. Anyone know of any other American railroad that ran as many steam locomotives for the fans?