We have performed a 1.3 cm survey of 24 massive young stellar objects ( MYSOs ) using the Expanded Very Large Array ( EVLA ) . The sources in the sample exhibit a broad range of massive star formation signposts including Infrared Dark Clouds ( IRDCs ) , UCHII regions , and extended 4.5 \mu m emission in the form of Extended Green Objects ( EGOs ) . In this work , we present results for G35.03+0.35 which exhibits all of these phenomena . We simultaneously image the 1.3 cm NH _ { 3 } ( 1,1 ) through ( 6,6 ) inversion lines , four CH _ { 3 } OH transitions , two H recombination lines , plus continuum at 0.05 pc resolution . We find three areas of thermal NH _ { 3 } emission , two within the EGO ( designated the NE and SW cores ) and one toward an adjacent IRDC . The NE core contains an UCH ii region ( CM1 ) and a candidate HCH ii region ( CM2 ) . A region of non-thermal , likely masing NH _ { 3 } ( 3,3 ) and ( 6,6 ) emission is coincident with an arc of 44 GHz CH _ { 3 } OH masers . We also detect two new 25 GHz Class I CH _ { 3 } OH masers . A complementary Submillimeter Array 1.3 mm continuum image shows that the distribution of dust emission is similar to the lower-lying NH _ { 3 } lines , all peaking to the NW of CM2 , indicating the likely presence of an additional MYSO in this protocluster . By modeling the NH _ { 3 } and 1.3 mm continuum data , we obtain gas temperatures of 20-220 K and masses of 20-130 M _ { \sun } . The diversity of continuum emission properties and gas temperatures suggest that objects in a range of evolutionary states exist concurrently in this protocluster .