Boundary 80 August 1969 slide 29 Boundary 81 August 1969 slide 30 Boundary 82 August 1969 slide 31 Boundary 83 August 1969 slide 32 Boundary 84 August 1969 slide 33 Boundary 85 July 1969 slide red 1 Boundary 86 July 1969 slide red 2 Boundary 87 July 1969 slide red 3 Boundary 88 July 1969 slide red 6 Boundary 89 July 1969 slide red 7 Boundary 91 July 1969 slide red 9 Boundary 92 July 1969 slide red 10 Boundary 93 July 1969 slide red 11 Boundary 95 July 1969 slide 13 Boundary 97 July 1969 slide 15 Boundary 98 July 1969 slide 16 Boundary 99 July 1969 slide 17 #belgrade Modern sculpture another pinhole fountain (2) another pinhole fountain (1) another pinhole fountain (3) pinhole beach (1) Boundary 77 July 1969 slide red 33 Boundary 76 July 1969 slide red 31 Boundary 74 July 1969 slide red 29 Boundary 72 July 1969 slide red 28 Boundary 71 July 1969 slide red 26 Boundary 70 July 1969 slide red 25 Boundary 68 July 1969 slide red 15 Boundary 67 July 1969 slide red 16 Boundary 66 July 1969 slide red 24 Boundary 65 July 1969 slide red 23 Boundary 62 unclear 1969 slide red 20 Boundary 61 unclear 1969 slide red 19 Boundary 60 unclear 1969 slide red 18 Boundary 59 unclear 1969 slide red 14 Boundary 58 Aug 1969 slide 14 Boundary 57 Aug 1969 slide 13 Boundary 56 Aug 1969 slide 15 Boundary 55 Sept 1969 slide 36 Boundary 54 Aug 1969 slide 12 Boundary 53 Aug 1969 slide 11 Boundary 52 Aug 1969 slide 10 Boundary 51 Aug 1969 slide 9