1 6 PRIMARY TRIANGULATION AND PRIMARY TRAVERSE. 
Geographic positions along highways in Wayne and Winfield townships. 
Station. 
Latitude. 
Longitude. 
Chicago Great Western Rwy. crossing, T. 40 N., R. 9 E., Wayne Town- 
/ // 
41 54 33.0 
41 53 58. 
41 52 58. 7 
41 51 57.3 
41 52 00.9 
41 50 55.0 
41 49 13.0 
O / It 
88 14 lti. 2 
T. 40 N.,R.9E., Wayne Township, near southwest corner sec. 32, road 
88 14 34. 1 
T. 39 N.. R. 9 E., Winfield Township, in northeast corner sec. 7, Chicago 
88 14 30.4 
Chicago, Burlington and Quincy Rwy. crossing of branch line in east- 
ern part of see. 18, T. 39 X.. R. 9 E. (Winfield Township) 
88 14 36.1 
88 1 4 28. 7 
88 14 37. 7 
T. 39N.,R.9 E.,near line between sees. 17 and 18, Chicago, Burlington 
and Quincy Rwy. branch line from West Chicago to Aurora, 672 feet 
northeast of north-south road, in north end of east abutment of open 
culvert, aluminum tablet stamped ' ; Prim. Trav. Sta. No. 3, 1905".. 
T. 39 N. , R. 9 E. , Winfield Township, in sec. 19, road corners east, west . 
T. 39 N., R. 9 E., Winfield Township, near center sec. 32, four corners. 
88 13 49. 8 
Geographic positions along Elgin, Jot id and Eastern Railway in Naperville Township. 
Station. 
T. 38 N., R. 9 E., in eastern part of sec. 5, Naperville Township, road 
crossing 
T. 38 N., R. 9 E.. sec. 8, Naperville Township, Chicago, Aurora and 
Elgin Electric Rwy. crossing 
Frontenac siding, 2 miies north of crossing Chicago, Burlington and 
Quincy Rwy. main line 
Frontenac siding, 1 mile north of, road crossing 
Frontenac siding, road crossing.. 
Frontenac siding, 0.75 mile south of , road crossing 
Latitude. 
41 48 39.1 
41 47 49.3 
41 46 36. 1 
41 45 36.8 
41 44 41.3 
41 43 56.4 
Longitude 
88 13 33.3 
88 13 48. 6 
88 13 54.2 
88 13 58. 2 
88 13 59.0 
88 14 03.5 
Geographic positions along highway from southwest corner of Naperville Township east- 
ward to southern half of Downers Grove Township. 
Station. 
Latitude. 
T. 38 N., R. 9 E., quarter corner between sees. 33 and •'!!. Naperville 
Township, Copenhagen Church on northeast corner, four corners.. . 
T. 38 N.. 1\. 9 E., quarter corner between sees. 34 and 35, Naperville 
Township, four corners 
Road corners norl h. south, and west : quarter corner be1 ween sees. 35 
and 36, Naperville Township 
T. 38 N., R. 9 E., quarter corner between sees. 25 and 26, Naperville 
Township, road corners east . west , and south 
T. 38 N., K. 10 E., in see. ;\i). Lisle Township, road corners northwest. 
southeast, and south 
T. 38N.,R. 10 E., sec. 30, 400 feel west of farmhouse of II. Eaight, 400 
feet east of iron truss highway bridge, in capstone at north i ml of 
stone arch culvert, Lisle Township: aluminum tablet stamped 
" Prim. Tra^. Sta. No. 5, 1905 " 
T. 38 N., R. 10 E., north part of sec. 28, Lisle Township, road corners 
east, west , and north 
T. 38 N., R. 10 E., in SW. \ sec. 23, Lisle Township; schoolhouse on 
northeast corner: four corners 
T. 38 N., R. 10 E., center sec. 25, Lisle Township; road corners north, 
south, and east 
T. 38 N.. Rs. 10 and HE., quarter corner between S ees. 25 and 30, Lisle 
and Downers Grove townships, four corners 
T. 38 N., R. 11 E., sec. 29, Downers Grove Township, road corners east, 
west, and north ! 
T. 38 N.j R. 11 E., (piarter corner between sees. 28 and 20, Downers 
Grove Township; road corners 
T. 38 N., R. 11 E., quarter corner be1 ween sees. 27 and 28, four corners 
41 43 57.7 
41 43 58.5 
41 4;'. 5'. i. 5 
41 44 52.0 
41 45 22,7 
41 45 05.6 
41 45 23.1 
41 45 39.0 
41 45 01.7 
41 45 02.8 
41 45 (14.5 
41 45 05.4 
41 45 06.8 
Longitude 
88 12 21.0 
88 11 11.2 
88 in 01.7 
88 lit 01.2 
88 08 30. 9 
88 07 44.2 
88 05 55.9 
ss 03 54.0 
88 02 26.2 
88 HI 51.0 
88 00 27.7 
S7 5'.i 35. 2 
87 58 25.4 
