Display sets of Blocks using a Formated List of Valid Block Numbers

The Block List Format:
     X_Y_A_P.... where X ,Y,A,P etc. are valid Block Numbers. For example, 8_60

The Date Range:
     The default date range is 1830-2000 and the current date is set to 1930 so it moving the time slider may be necessary to see buildings on particular blocks.

The View:
    The pitch and angle of view are fixed, but the distance is calculated so as to show all chosen Blocks. Thus a List of Blocks geographically separated might display very small building models.

Blocks:
Riverfront Blocks:
6 , 7 , 8 , 9 , 10 , 32 , 33 , 34 , 35 , 59 , 60 , 61 , 84 , 86 , 101
 
6_7_8_9_10_32_33_34_35_59_60_61_84_86_101

Scott Joplin Neighborhood:
931 , 932, (And 525 , 936 , 926 , 922 , 983 , 982)
 
931_932

Old North Redevelopment:
1116 , 1117 , 1118 , 1119 , 1122 , 1123 , 1124 , 1125
 
1116_1117_1118_1119_1122_1123_1124_1125

Lucas Place:
512 , 513 , 826 , 827
 
512_513_826_827

Henry Shaw's Block:
181

Harlem Creek:
4359 , 4360 , 4364 , 4518 , 4519 , 4519B , 4520 , 4520B , 4822 , 4823 , 5246 , 5930 , 5931 , 5239, 5247 , 5248S , 5249 ,5282 , 5932 , 6132
 
 4359_4360_4364_4518_4519_4519B_4520_4520B_4822_4823_5246_5930_5931_5239_5247_5248S_5249_5282_5932_6132